Dr. K. Koteswara Rao

RESEARCH INTERESTS

Solid electrolytes, Luminescent materials, photo-catalysis, Carbon nano structures, Organic solar cells, NaSICONs

Scopus Publications

Excellent Red Phosphors of Eu³⁺ Activated Double Perovskite Structured Series NaSrBi<inf>1-x</inf>Eu<inf>x</inf>MoO<inf>6</inf> (x = 0.0-0.24) Prepared by Citrate-Gel Method
K. Koteswara Rao and B. Nagamani Naidu
Asian Journal of Chemistry
In this work, a double perovskite structured series was prepared by using simple citrate sol-gel method at 700 ºC for 5 h of sintering. The concentrated sample of x = 0.12 exhibits more intensity than all other concentration in their emission spectra for every series. Particle size, thickness of the particle, distance between particles and its surface morphology were identified by scanning electron microscopy. The size and distance between particles in each series lies in between the range of 1 μm-50 nm and 20-50 nm, respectively. Many voids with strong agglomerations were also observed. In addition, the absorption of light capacity for each series investigated through diffuse reflectance spectra method. All the samples of double perovskite structures exhibit a sharp cut-off of absorption light in the UV-visible regions of diffuse reflectance spectra. Predominantly, all the samples shows a very good charge transfer band in their excitation spectra that leads to more absorption of light correspondingly emits high intensity in emission spectra at 395, 464 and 545 nm. All the samples of every series emit main peaks in the range of 550-700 nm in their emission spectra. Out of all four main peaks, 614 nm peak represents the red phosphor with 5D0-7F2 transition in the emission spectra. The prepared double perovskite structure compound CRI coordinates were almost close to commercially available red phosphor i.e. Y2O2S(0.67,0.33) as per NTSC. Hence, the prepared red phosphors can be used in order to display devices, luminescent materials and WLEDs.


Mechanism of Luminescence Enhancement in Eu³⁺ Activated Double Perovskite Phosphors Bi2-xEuxWO6 (x = 0-0.24) Prepared by Sol-Gel Method
K. Koteswara Rao and B. Nagamani Naidu
Asian Journal of Chemistry
A double perovskite structured series Bi2–xEuxWO6 (x = 0.03-0.24) was prepared by using simple citrate sol-gel method at 700 ºC for 5 h of sintering. The double perovskite structure and its lattice parameters were analyzed by the XRD technique and found to be pure orthorhombic phase. The concentrated sample of x = 0.12 exhibits more intensity than all other concentration in their emission spectra. Particle size, thickness of the particle, distance between particles and its surface morphology were identified by scanning electron microscopy. The size and distance between particles lies in between the range of 1-50 nm and 20-50 nm, respectively. In addition to this the absorption of light capacity for every sample was investigated through diffuse reflectance spectra method. All the samples of double perovskite structures exhibit a sharp cut-off of absorption light in the UV and visible regions of diffuse reflectance spectra. Predominantly, sample x = 0.12 shows very good charge transfer band in their excitation spectra that leads to more absorption of light correspondingly emits high intensity in emission spectra. All the samples of series emit main peaks in the range of 550-700 nm in their emission spectra. Out of all four main peaks, 614 nm peak represents the red phosphor with 5D0−7F2 transition in the emission spectra. The prepared double perovskite structure compound CRI co-ordinates (0.6254, 0. 3739) are almost close to commercially available red phosphor i.e. Y2O2S (0.67, 0.33) as per NTSC. Hence, the prepared red phosphors can be used in order to display devices, luminescent materials and WLEDs.


Sol-gel synthesis, crystal structure and luminescence properties of Eu³⁺ doped double perovskite molybdates NaCaBi<inf>1-x</inf>Eu<inf>x</inf>MoO<inf>6</inf> (x = 0-0.27)
B Nagamani Naidu, K Koteswara Rao, and M P S Murali Krishna
IOP Publishing
Sodium and calcium containing bismuth molybdates of double perovskite structured NaCaBi1−xEuxMoO6 (x = 0.0–0.27) were prepared by a sol-gel combustion method. The samples were finally sintered at 500, 600 & 700 °C/5 h each and characterized by using powder X-ray diffraction (XRD), UV–Visible absorption and fluorescence spectroscopy. The powder XRD patterns indicated a monoclinic phase initially for x = 0 to 0.09 and then a mix of monoclinic and triclinic phases for x = 0.12 to 0.18. For the remaining compositions, i.e. for x = 0.21–0.27 the samples crystallized in triclinic phase only. A corresponding change of lattice parameters and peak positions were observed in powder XRD patterns as the Eu3+ concentration was increased. The powder samples sintered at 700 °C /5 h were excited at 395, 465 & 540 nm and their corresponding emission spectra showed major peaks in the vicinity of 595 & 614 nm for all the excitation wavelengths. The Eu3+ concentration of x = 0.12 gave highest red light emission intensity, related to the transition 5D0–7F2. The morphology of powders showed clear and characteristic nano-flake like structure. The color rendering index (CRI) coordinates of all the samples were calculated and showed values close to National Television Standards Committee (NTSC) coordinates of pure red phosphor showing promise for phosphor converted -white light emitting diodes (pc-WLEDs).


Semi sol-gel synthesis and red luminescence studies of Eu ³⁺ activated Double perovskite phosphors Bi <inf>2-x</inf> Eu <inf>x</inf> MoO <inf>6</inf> (x=0.0–0.24)
B. Nagamani Naidu, K. Koteswara Rao, and M.P.S. Murali Krishna
Elsevier BV



Nano bismuth molybdate for photo-catalytic synthesis of imidazo [1, 2-a] pyridines using 2-aminopyridines and phenacyl bromide in aqueous conditions




Nano SiO <inf>2</inf> catalyzed synthesis of Imidazo[1,2-a]pyridines
Tejeswararao DHARMANA and Koteswara Rao KOLA
International Information and Engineering Technology Association
A facile microwave assisted reaction of phenacyl bromide and 2-amino pyridine is catalyzed by Nano SiO2 under solvent free conditions to give corresponding Imidazo[1,2a]pyridines in good yields. Reactions proceed with high efficiency and good functional group tolerance. This approach provides a useful protocol for the preparation of highly substituted Imidazo[1,2-a]pyridine derivatives. RÉSUMÉ. Une réaction facile assistée par micro-ondes du bromure de phénacyle et de la 2amino pyridine est catalysée par du Nano SiO2 dans des conditions sans solvant pour donner les Imidazo[1,2-a]pyridines correspondantes avec de bons rendements. Les réactions se déroulent avec une efficacité élevée et une bonne tolérance fonctionnelle du groupe. Cette approche fournit un protocole utile pour la préparation de dérivés d’Imidazo[1,2-a]pyridine hautement substitués.


Silica@PMA core-shell structure as recyclable catalyst for the synthesis of quinolines




Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells
Hung-Chang Li, K. Koteswara Rao, Jun-Yuan Jeng, Yu-Jer Hsiao, Tzung-Fang Guo, Yean-Ren Jeng, and Ten-Chin Wen
Elsevier BV



A wide-ranging review on Nasicon type materials
N. Anantharamulu, K. Koteswara Rao, G. Rambabu, B. Vijaya Kumar, Velchuri Radha, and M. Vithal
Springer Science and Business Media LLC



Investigation of nitrogen doped diamond like carbon films as counter electrodes in dye sensitized solar cells
Sea-Fue Wang, K. Koteswara Rao, Thomas C.K. Yang, and Hsin-Pei Wang
Elsevier BV



Synthesis, crystal structure and optical properties of quasi-one-dimensional lead (II) iodide: C<inf>14</inf>H<inf>18</inf>N<inf>2</inf>Pb<inf>2</inf>I<inf>6</inf>
K. Pradeesh, Monika Agarwal, K. Koteswara Rao, and G. Vijaya Prakash
Elsevier BV



Structural characterization and luminescent properties of a red phosphor series: Y<inf>2-x</inf>Eu<inf>x</inf>(MoO<inf>4</inf>)<inf>3</inf> (x=0.4-2.0)
Sea-Fue Wang, K. Koteswara Rao, Yuh-Ruey Wang, Yung-Fu Hsu, Shih-Hsin Chen, and Yi-Ching Lu
Wiley
A series of rare earth molybdates, Y2−xEux(MoO4)3 for x=0.4, 0.8, 1.2, 1.6 and 2.0 were prepared by solid-state method and their crystal structures, photo luminescent characteristics were investigated. The powders are mainly studied for their red light emission efficiency under near UV excitation. The crystal structures of the powders were found to depend on annealing temperature and the yttrium concentration. Mixtures of monoclinic (C2/c) and orthorhombic (Pba2, Pbna) structures were formed in varying proportions depending on the value of x and annealing temperatures (700°–800°C). The luminescence behavior depended on the resultant composition of the crystal phase and the Eu3+ concentration. The excitation spectra showed the characteristic and broad O→Mo charge transfer (CT) band of the MoO4 tetrahedra and the sharp intra-configurational 4f–4f transitions of Eu3+ in the host lattice. The integrated emission ratio (5D0→7F2/5D0→7F1) of Eu3+ depends on the annealing temperature and reveals that the local site symmetry of Eu3+ ions decreases with increasing concentration of Eu3+. The emission spectra obtained by exciting at 396 nm, gave highest red emission intensity for Y0.4Eu1.6(MoO4)3 annealed at 700°C/6 h among this series of samples.


Synthesis and characterization of Ce³⁺:YAG phosphors by heterogeneous precipitation using different alumina sources
Sea-Fue Wang, K. Koteswara Rao, Yu-Chuan Wu, Yuh-Ruey Wang, Yung-Fu Hsu, and Chian-You Huang
Wiley
Ce3+-doped yttrium aluminum garnet (Ce:YAG) phosphor powders were synthesized by heterogeneous precipitation process using three different aluminum sources: α-phase, θ-phase, and boehmite (AlOOH). Mixtures of yttrium and cerium nitrate solutions containing various aluminum sources were precipitated by ammonia solution in normal and reverse strike methods. The influence of pH was studied in the normal strike method by maintaining the solutions at pH 7, 9, and 11 during precipitation. Dried precipitates were double calcined at 1300°C/16 h and 1300–1500°C/24 h, at a ramping rate of 10°C/min, with an intermittent wet ball milling in water. Structural evolution of the resultant phosphors was studied by powder XRD. In the normal strike method, a highly pure YAG phase was formed by α- alumina (pH 7, 11) and θ-alumina (pH 11) while boehmite source ended up with mixed phases of YAlO3 (YAP) and Y4Al2O9 (YAM) along with YAG phase at all pH values of precipitation. However, in the reverse strike process, the θ-phase of alumina gave an extremely pure Ce:YAG phase at a relatively lower calcination temperature (1400°C/24 h) compared with the α-phase and also showed more intense emission of yellowish-green light under blue (λ=469 nm) excitation. Scanning electron microscopy revealed 1–2 μm sized particles with least agglomeration in the reverse strike method.


Preparation, characterization, impedance and thermal expansion studies of Mn<inf>0.5</inf>MSb(PO<inf>4</inf>)<inf>3</inf> (M = Al, Fe and Cr)
Navulla Anantharamulu, K. Koteswara Rao, M. Vithal, and G. Prasad
Elsevier BV



Powder X-ray diffraction, infrared and conductivity studies of AgSbMP<inf>3</inf>O<inf>12</inf> (M = Al, Ga, Fe and Cr)
G. Rambabu, N. Anantharamulu, K. Koteswara Rao, G. Prasad, and M. Vithal
Elsevier BV



Influence of crystallinity and carbon content on visible light photocatalysis of carbon doped titania thin films
Ming-Show Wong, Shih-Wei Hsu, K. Koteswara Rao, and Chinthala Praveen Kumar
Elsevier BV



Co-sputtered carbon-incorporated titanium oxide films as visible light-induced photocatalysts
Ming-Show Wong, Shun-Huei Wang, Ta-Kun Chen, Chun-Wei Weng, and K. Koteswara Rao
Elsevier BV



Nanocolumnar titania thin films uniquely incorporated with carbon for visible light photocatalysis
Shun-Huei Wang, Ta-Kun Chen, K. Koteswara Rao, and Ming-Show Wong
Elsevier BV



Preparation, characterization and conductivity studies of a Nasicon system Ag <inf>3-2x</inf>Ta <inf>x</inf>Al <inf>2-x</inf> (PO <inf>4</inf>) <inf>3</inf> (x = 0.6-1.4)
G. Rambabu, N. Anantharamulu, K. Koteswara Rao, J. A. R. P. Sarma, and M. Vithal
Wiley
Rhombohedral Nasicon type materials of composition Ag3–2x Tax Al2–x (PO4)3 (x = 0.6, 0.7,0.8, 0.9, 1.0, 1.1,1.2, 1.3 and 1.4) have been prepared and characterized by powder XRD and IR. All these compositions are found to be isomorphous with NbTiP3O12, lithium and sodium analogues of same Nasicon framework. The unit cell parameters were derived from powder XRD. All the compounds show characteristic PO4 vibrational bands. DC conductivity measurements were carried out in the temperature range 300–650 K. The activation energies for conduction were deduced from the Arrhenius plots and are in the range 0.42–0.71 eV. Among the series investigated, Ag0.8Ta1.1Al0.9P3O12 exhibits the highest conductivity, σ ≈ 5.01 × 10–3 S cm–1 at 350 °C (Ea = 0.55 eV). (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)


Preparation, characterization, conductivity and thermal expansion studies of Ca<inf>0.5</inf>SbMP<inf>3</inf>O<inf>12</inf> (M=Al, Fe, Cr)
G. Rambabu, K. Koteswara Rao, N. Anantharamulu, M. Raghavender, G. Prasad, V. Prashanth Kumar, C. Vishnuvardhan Reddy, and Muga Vithal
Springer Science and Business Media LLC



A novel core-shell like composite In<inf>2</inf>O<inf>3</inf>@CaIn<inf>2</inf>O<inf>4</inf> for efficient degradation of Methylene Blue by visible light
Wen Ku Chang, K. Koteswara Rao, Hua Cing Kuo, Jen Fong Cai, and Ming Show Wong
Elsevier BV



Preparation, characterization and ESR studies of bulk and nano sized pyrochlore La<inf>2-x</inf>Gd<inf>x</inf>Zr<inf>2</inf>O<inf>7</inf> (x = 0.025, 0.05, 0.075 and 0.1)
K. Koteswara Rao, N. Anantharamulu, M. Salagram, and M. Vithal
Elsevier BV



Preparation, characterization and impedance study of AgTaMP <inf>3</inf>O<inf>12</inf> (M=Al, Ga, In, Cr, Fe and Y)
K KOTESWARARAO, G RAMBABU, M RAGHAVENDER, G PRASAD, G KUMAR, and M VITHAL
Elsevier BV



Hydrogen insertion, ESR and Mössbauer studies of Cu <inf>0.5</inf>TaFeP<inf>3</inf>O<inf>12</inf>
K. Koteswara Rao, N. Anantharamulu, A.K. Mishra, C. Bansal, and M. Vithal
Elsevier BV



Electrical conductivity of Ba-Co-Ti hexagonal ferrites
D Ravinder, P Shalini, P Mahesh, K Koteswara Rao, M Vithal, and B.S Boyanov
Elsevier BV

RECENT SCHOLAR PUBLICATIONS

Mechanism of luminescence Enhancement in Eu3+ activated Double perovskite phosphors Bi2-xEuxWO6 (x= 0 - 0.24) prepared by semi sol-gel Method
KKRBN Naidu
Asian Journal of Chemistry 34 (9), 2205-2210 2022



Excellent red phosphors of Eu3+ activated Double perovskite structured series NaSrBi1-xEuxMoO6(x=0.0-0.24) prepared by citrate-gel method
KKRBN Naidu
Asian Journal of Chemistry 34 (11), 2806-2812 2022



Growth of silver nanowires on anatase structured TiO2 thin films by thermal reduction method
KKRBN Naidu
NeuroQuantology 20 (8), 8637-8645 2022



Bismuth and Europium - based double perovskite nanoscale motifs as support media for the Synthesis of Quinoline
KK Rao
Turkish Journal of Physiotherapy and Rehabilitation 32 (2) 2021



Fabrication Of TiO2 Nanorod & Nanotube Arrays by Electrochemical Anodization – Influence of Process Parameters
KKRVD Rao
Turkish Journal of Physiotherapy and Rehabilitation 32 (3) 2021



Sol-gel synthesis, crystal structure and luminescence properties of Eu3+ doped double perovskite molybdates NaCaBi1− xEuxMoO6 (x= 0–0.27)
BN Naidu, KK Rao, MPSM Krishna
Materials Research Express 6 (11), 116210 2019



Red Mud & Graphene Oxide Blend As An Effective Coagulant and Adsorbent for the Treatment of Waste Water from Various Industries
KG Naidu, KV Krishna, KK Rao
International Journal of Mechanical Engineering and Technology 10 (3) 2019



Semi sol-gel synthesis and red luminescence studies of Eu3+ activated Double perovskite phosphors Bi2-xEuxMoO6 (x= 0.0–0.24)
BN Naidu, KK Rao, MPSM Krishna
Optik 182, 565-570 2019



Nano SiO₂ catalyzed synthesis of Imidazo[1,2-a]pyridines.
T Dharmana, KR Kola, NN Bonnada
Annales de Chimie Science des Matriaux 42 (4) 2018



Reactively sputtered InVO₄ thin films: effect of non-stoichiometric composition on photocatalytic activity.
KK Rao
2018



A STUDY ON THE SOLAR HYDROGEN PRODUCTION BY DIFFERENT HETERO STRUCTURED PHOTOCATALYSTS: A STATE-OF THE-ART REVIEW
M Karthik, SSP Tej, IJ Madhuri, KK Rao
International Journal of Research In Science & Engineering 2018



Nano bismuth molybdate for photo-catalytic synthesis of imidazo [1, 2-a] pyridines using 2-aminopyridines and phenacyl bromide in aqueous conditions
KKR D.Tejeswararao, B.Nagamani Naidu
International Journal of Mechanical Engineering and Technology 9 (11), 2181-2188 2018



Nano flakes of NaMgBi0.85Eu0.15WO6 as catalyst for simple and efficient green synthesis of Dihydropyridines
K Koteswara Rao, D Tejeswara Rao, B Nagamani Naidu
International Journal for Research in Applied Science & Engineering 2017



Silica@PMA core-shell structure as recyclable catalyst for the synthesis of Quinolines
D Tejeswararao, K Koteswara Rao, B Nagamani Naidu
Der Pharma Chemica 8 (17), 181-185 2016



Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells
HC Li, KK Rao, JY Jeng, YJ Hsiao, TF Guo, YR Jeng, TC Wen
Solar energy materials and solar cells 95 (11), 2976-2980 2011



A wide-ranging review on Nasicon type materials
NA Anantharamulu, K Koteswara Rao, G Rambabu, B Vijaya Kumar, ...
Journal of materials science 46, 2821-2837 2011



Investigation of nitrogen doped diamond like carbon films as counter electrodes in dye sensitized solar cells
SF Wang, KK Rao, TCK Yang, HP Wang
Journal of Alloys and Compounds 509 (5), 1969-1974 2011



Synthesis, crystal structure and optical properties of quasi-one-dimensional lead (II) iodide: C14H18N2Pb2I6
K Pradeesh, M Agarwal, KK Rao, GV Prakash
Solid state sciences 12 (1), 95-98 2010



Structural Characterization and Luminescent Properties of a Red Phosphor Series: Y_2−xEu_x(MoO₄)₃ (x=0.4–2.0)
SF Wang, K Koteswara Rao, YR Wang, YF Hsu, SH Chen, YC Lu
Journal of the American Ceramic Society 92 (8), 1732-1738 2009



Synthesis and Characterization of Ce³⁺:YAG Phosphors by Heterogeneous Precipitation Using Different Alumina Sources
SF Wang, KK Rao, YC Wu, YR Wang, YF Hsu, CY Huang
International Journal of Applied Ceramic Technology 6 (4), 470-478 2009

MOST CITED SCHOLAR PUBLICATIONS

A wide-ranging review on Nasicon type materials
NA Anantharamulu, K Koteswara Rao, G Rambabu, B Vijaya Kumar, ...
Journal of materials science 46, 2821-2837 2011
Citations: 670



Preparation and characterization of bulk and nano particles of La2Zr2O7 and Nd2Zr2O7 by sol–gel method
KK Rao, T Banu, M Vithal, G Swamy, KR Kumar
Materials Letters 54 (2-3), 205-210 2002
Citations: 184



Influence of crystallinity and carbon content on visible light photocatalysis of carbon doped titania thin films
MS Wong, SW Hsu, KK Rao, CP Kumar
Journal of Molecular Catalysis A: Chemical 279 (1), 20-26 2008
Citations: 102



A novel core–shell like composite In2O3@ CaIn2O4 for efficient degradation of methylene blue by visible light
WK Chang, KK Rao, HC Kuo, JF Cai, MS Wong
Applied Catalysis A: General 321 (1), 1-6 2007
Citations: 81



Nanocolumnar titania thin films uniquely incorporated with carbon for visible light photocatalysis
SH Wang, TK Chen, KK Rao, MS Wong
Applied Catalysis B: Environmental 76 (3-4), 328-334 2007
Citations: 70



Structural Characterization and Luminescent Properties of a Red Phosphor Series: Y_2−xEu_x(MoO₄)₃ (x=0.4–2.0)
SF Wang, K Koteswara Rao, YR Wang, YF Hsu, SH Chen, YC Lu
Journal of the American Ceramic Society 92 (8), 1732-1738 2009
Citations: 67



Investigation of nitrogen doped diamond like carbon films as counter electrodes in dye sensitized solar cells
SF Wang, KK Rao, TCK Yang, HP Wang
Journal of Alloys and Compounds 509 (5), 1969-1974 2011
Citations: 42



Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells
HC Li, KK Rao, JY Jeng, YJ Hsiao, TF Guo, YR Jeng, TC Wen
Solar energy materials and solar cells 95 (11), 2976-2980 2011
Citations: 38



Synthesis, crystal structure and optical properties of quasi-one-dimensional lead (II) iodide: C14H18N2Pb2I6
K Pradeesh, M Agarwal, KK Rao, GV Prakash
Solid state sciences 12 (1), 95-98 2010
Citations: 38



Preparation, characterization, impedance and thermal expansion studies of Mn0. 5MSb (PO4) 3 (M= Al, Fe and Cr)
N Anantharamulu, KK Rao, M Vithal, G Prasad
Journal of alloys and compounds 479 (1-2), 684-691 2009
Citations: 34



Electrical conductivity of Ba–Co–Ti hexagonal ferrites
D Ravinder, P Shalini, P Mahesh, KK Rao, M Vithal, BS Boyanov
Journal of alloys and compounds 364 (1-2), 17-22 2004
Citations: 30



Preparation, characterization and impedance study of AgTaMP3O12 (M= Al, Ga, In, Cr, Fe and Y)
KK Rao, G Rambabu, M Raghavender, G Prasad, GS Kumar, M Vithal
Solid State Ionics 176 (37-38), 2701-2710 2005
Citations: 26



Preparation, characterization and ESR studies of bulk and nano sized pyrochlore La2− xGdxZr2O7 (x= 0.025, 0.05, 0.075 and 0.1)
KK Rao, N Anantharamulu, M Salagram, M Vithal
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 66 (3 2007
Citations: 23



Preparation, infrared and magnetic susceptibility studies of LnB3O6 (Ln= Gd, Eu and Sm)
KK Rao, M Vithal, D Ravinder
Journal of magnetism and magnetic materials 253 (1-2), 65-71 2002
Citations: 23



Co-sputtered carbon-incorporated titanium oxide films as visible light-induced photocatalysts
MS Wong, SH Wang, TK Chen, CW Weng, KK Rao
Surface and Coatings Technology 202 (4-7), 890-894 2007
Citations: 21



Optical, thermal and electrical studies of Nasicon type Na2PbZnMP3O12 (M= Al, Fe and Ga) glasses
T Banu, KK Rao, M Vithal
Physics and chemistry of glasses 44 (1), 30-35 2003
Citations: 19



Synthesis and Characterization of Ce³⁺:YAG Phosphors by Heterogeneous Precipitation Using Different Alumina Sources
SF Wang, KK Rao, YC Wu, YR Wang, YF Hsu, CY Huang
International Journal of Applied Ceramic Technology 6 (4), 470-478 2009
Citations: 18



Powder X-ray diffraction, infrared and conductivity studies of AgSbMP3O12 (M= Al, Ga, Fe and Cr)
G Rambabu, N Anantharamulu, KK Rao, G Prasad, M Vithal
Materials Research Bulletin 43 (6), 1509-1518 2008
Citations: 18



Preparation, characterization, conductivity and thermal expansion studies of Ca_0.5SbMP₃O₁₂ (M=Al, Fe, Cr)
G Rambabu, K Koteswara Rao, N Anantharamulu, M Raghavender, ...
Journal of materials science 42, 3613-3620 2007
Citations: 8



Preparation, characterization, ESR and PAS studies of Cu0. 5NbAlP3O12 and HNbAlP3O12
M Vithal, B Srinivasulu, KK Rao, CM Rao
Materials Letters 45 (1), 58-62 2000
Citations: 7