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Nagabhushana, BM and Chakradhar, Sreekanth RP and Ramesh, KP and Prasad, V and Shivakumara, C and Chandrappa, GT (2008) Magnetoresistive studies on nanocrystalline $La_{0.8}Sr_{0.2}MnO_{3+\delta}$ manganite. In: Physica B: Condensed Matter, 403 (19-20). pp. 3360-3364.
Nagabhushana, BM and Chakradhar, Sreekanth RP and Ramesh, KP and Prasad, V and Shivakumara, C and Chandrappa, GT (2008) Magnetoresistance studies on barium doped nanocrystalline manganite. In: Journal of Alloys and Compounds, 450 (2). pp. 364-368.
Viswanatha, R and Reddy, Venkata Subba M and Reddy, Narayana C and Chakradhar, Sreekanth RP (2008) Infrared and MAS NMR studies of potassium borovanadate glasses. In: Journal of Molecular Structure . (In Press)
Nagabhushana, BM and Chakradhar, Sreekanth RP and Ramesh, KP and Shivakumara, C and Chandrappa, GT (2007) Combustion synthesis, characterization and metal–insulator transition studies of nanocrystalline $La_{1-x}Ca_xMnO_3 (0.0 \leq x \leq 0.5)$. In: Materials Chemistry and Physics, 102 (1). pp. 47-52.
Omkaram, I and Chakradhar, Sreekanth RP and Rao, Lakshmana J (2007) EPR, optical, infrared and Raman studies of $VO^{2+}$ ions in polyvinylalcohol films. In: Physica B: Condensed Matter, 388 (1-2). pp. 318-325.
Chakradhar, Sreekanth RP and Yasoda, B and Rao, Lakshmana J and Gopal, NO (2006) Mixed Alkali Effect in $Li_{2}O -Na_{2}O-B_{2}O_{3}$ Glasses Containing CuO-An EPR and Optical Study. In: Journal of Non-Crystalline Solids, 352 (36-37). pp. 3864-3871.
Nagabhushana, BM and Chakradhar, Sreekanth RP and Ramesh, KP and Shivakumara, C and Chandrappa, GT (2006) Low temperature synthesis, structural characterization, and zero-field resistivity of nanocrystalline $La_{1-x}MnO_{3+\delta}$ (0.0\leq{x}\leq0.3) manganites. In: Materials Research Bulletin, 41 (9). pp. 1735-1746.
Chakradhar, Sreekanth RP and Yasoda, B and Rao, Lakshmana J and Gopal, NO (2006) Mixed alkali effect in $Li_2O-Na_2O-B_2O_3$ glasses containing $Fe_2O_3$ —An EPR and optical absorption study. In: Materials Research Bulletin, 41 (9). pp. 1646-1656.
Omkaram, I and Chakradhar, Sreekanth RP and Rao, Lakshmana J (2006) EPR, optical, infrared and Raman studies of $VO^{2+}$ ions in polyvinylalcohol films. In: Physica B .
Nagabhushana, BM and Rao, JL and Chandrappa, GT and Ramesh, KP and Chakradhar, Sreekanth RP (2006) Preparation, Characterization, and Thermoluminescence Studies of Porous CdSiO3 Ceramic powders. In: DAE Solid State Physics Symposium, Dec 26-30 2006, Barkatullah University, Bhopal.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Chandrappa, GT and Ramesh, KP and Rao, JL (2006) Solution combustion derived nanocrystalline macroporous wollastonite ceramics. In: Materials Chemistry and Physics, 95 (1). pp. 169-175.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Nagabhushana, H and Rao, JL and Chandrappa, GT and Ramesh, KP (2006) Thermo stimulated luminescence studies of porous $CdSiO_3$ ceramic powders. In: National Conference on Novel Materials and Technologies (NCNMT-2006), 17-18 February, S. V. University, Tirupati..
Chakradhar, Sreekanth RP and Sivaramaiah, G and Rao, Lakshmana J and Gopal, NO (2005) EPR and optical investigations of manganese ions in alkali lead tetraborate glasses. In: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 62 (4-5). pp. 761-768. (In Press)
Chakradhar, Sreekanth RP and Sivaramaiah, G and Rao, Lakshmana J and Gopal, NO (2005) $Fe^{3+}$ ions in alkali lead tetraborate glasses-an electron paramagnetic resonance and optical study. In: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 62 (1-3). pp. 51-57.
Yasoda, B and Chakradhar, Sreekanth RP and Rao, Lakshmana J and Gopal, NO and Xu, CN (2005) Electron paramagnetic resonance and luminescent properties of $Mn^{2+}:MgGa_{2}O_{4}$ phosphor. In: Journal of Applied Physics, 98 . 053910-1.
Chakradhar, Sreekanth RP and Sivaramaiah, G and Rao, Lakshmana J and Gopal, NO (2005) EPR and Optical Studies of Vanady Ions in Alkali Lead Borotellurite Glasses. In: Modern Physics Letters B, 19 (13 & 1). pp. 643-653.
Chakradhar, Sreekanth RP and Ramesh, KP and Rao, JL and Ramakrishna, J (2005) Influence of mixed alkali on the spectral properties of vanadyl ions doped $xNa_2O-(30 - x)K_2O-60B_2O_3$ glasses - an EPR and optical study. In: Materials Research Bulletin, 40 (6). pp. 1028-1043.
Chakradhar, Sreekanth RP and Ramesh, KP and Rao, JL and Ramakrishna, J (2005) The effect of mixed alkali on EPR and optical absorption spectra in mixed alkali borate $xNa_2O-(30 - x)K_2O-70B_2O_3$ glasses doped with iron ions. In: Journal of Non-Crystalline Solids, 351 (14-15). pp. 1289-1299.
Murali, A and Chakradhar, Sreekanth RP and Rao, Lakshmana J (2005) Allowed and forbidden hyperfine structure of Mn2+ ions in sodium tetraborate glasses-an EPR and optical study. In: Physica B: Condensed Matter, 358 (1-4). pp. 19-26.
Chakradhar, Sreekanth RP and Rao, Lakshmana J and Sivaramaiah, G and Gopal, NO (2005) Chromium ions in alkali lead borotellurite glasses-An EPR and optical study. In: physica status solidi (b), 242 (14). pp. 2919-2929.
Murali, A and Chakradhar, Sreekanth RP and Rao, Lakshmana J (2005) EPR studies of Gd3+ ions in lithiumtetra boro-tellurite and lithiumlead tetra boro-tellurite glasses. In: Physica B, 364 (1-4). pp. 142-149.
Nagabhushan, BM and Chandrappa, GT and Chakradhar, Sreekanth RP and Ramesh, KP and Shivakumara, C (2005) Synthesis, structural and transport properties of nanocrystalline $La_{1-x}Ba_{x}MnO_{3}$ (0.0\leq x \leq0.3) powders. In: Solid State Communications 136 (2005) 427-432, 136 . pp. 427-432.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Chandrappa, GT and Ramesh, KP and Rao, JL (2004) Solution combustion derived nanocrystalline $Zn_2SiO_4$:Mn phosphors:A spectroscopic view. In: Journal of Chemical Physics, 121 (20). pp. 10250-10259.
Ratnakaram, YC and Kumar, Vijaya A and Naidu, Thirupathi D and Chakradhar, Sreekanth RP and Ramesh, KP (2004) Optical absorption and luminescence properties of Nd3+ in mixed alkali borate glasses-Spectroscopic investigations. In: Journal of Luminescence, 110 (1-2). pp. 65-77.
Chakradhar, Sreekanth RP and Ramesh, KP and Rao, JL and Ramakrishna, J (2004) Mixed alkali effect in borate glasses-EPR and optical band gap studies in xNa2O-(30-x)K2O-70 B2O3 glasses doped with Gd3+ions. In: Modern Physics Letters B, 18 (2 & 3). pp. 83-97.
Chakradhar, Sreekanth RP and Ramesh, KP and Ramakrishna, J (2004) 7Li, 31P and 1H Static and MAS NMR investigations in the mixed crystals Li(1-x)(NH4)xH2PO4 (0.3 \leq x \leq 0.7). In: DAE Solid State Physics Symposium, Dec 26 - 30, 2004, Amritsar, India.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Chandrappa, GT and Ramesh, KP and Rao, JL (2004) EPR of $Ni^{2+}$ ions in macro porous nanocrystalline $CaSiO_3$ ceramic powders. In: DAE Solid State Physics Symposium, Dec 26 - 30, 2004, Amritsar, India.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Chandrappa, GT and Ramesh, KP and Rao, JL (2004) EPR of Cu2+ ions in macro porous nanocrystalline wollastonite ceramic powders. In: Asia-Pacific EPR/ESR Symposium 2004, 22-25, November 2004, Indian Institute of Scince, Bangalore-560 012, India, p. 111.
Chakradhar, Sreekanth RP and Subramanian, S and Ramesh, KP and Ramakrishna, J (2004) Evidence of Quantum Roatational Tunelling in Orientational glass at low temperature - A NMR study. In: Symposium on NMR Drug Design and Bioinformatics, February 17-20, 2004, Bose Institute and S. N. Bose National Centre for Basic Sciences, Kolkata, India, p. 131.
Chakradhar, Sreekanth RP (2004) Mixed alkali effect in borate glasses - An EPR and optical study. In: Conference and School on Unifying Concepts in Glass Physics III Statphys 22 Satellite Meeting, School: 25 - 26 June 2004, Conference: 28 June - 1 July 2004, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore-560 012.
Subramanian, S and Chakradhar, Sreekanth RP and Ramesh, KP (2004) NMR Study of molecular dynamics in [NH4(CH3)4]2PbCl6 at low temperatures. In: Symposium on NMR Drug Design and Bioinformatics, February 17-20, 2004, Bose Institute and S. N. National Centre for Basic Sciences, Kolkata, India, p. 130.
Nagabhushana, BM and Chandrappa, GT and Chakradhar, Sreekanth RP and Ramesh, KP (2004) Studies on nanocrystalline La1-x CaxMnO3 (0.0 \leq x \leq 0.5) manganites. In: DAE Solid State Physics Symposium, Dec 26 - 30, 2004, Amritsar, India.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Chandrappa, GT and Nagabhushana, H and Ramesh, KP and Rao, JL (2004) Synthesis, Characterization and TL studies of Porous CaSiO3 Ceramic Powders. In: International Conference on Ceramic Processing ICCP-04, 21st - 24th Dec 2004, Mumbai, India.
Chakradhar, Sreekanth RP and Yasoda, B and Rao, Lakshmana J and Gopal, NO (2004) The effect of mixed alkalis on EPR and optical bandgap in Fe3+ ions doped xLi2O-(30-x)Na2O-70B2O3 glasses. In: Asia-Pacific EPR/ESR Symposium 2004 (APES'04), 22-25, November 2004, Indian Institute of Scince, Bangalore-560 012, India, p. 112.
Ratnakaram, YC and Chakradhar, Sreekanth RP and Ramesh, KP and Rao, JL and Ramakrishna, J (2003) The effect of host glass on optical absorption and fluorescence of Nd3+ in xNa(2)O-(30-x)K2O-70B(2)O(3) glasses. In: Journal of Physics: Condensed Matter, 15 (40). pp. 6715-6730.
Chakradhar, Sreekanth RP and Ramesh, KP and Rao, JL and Ramakrishna, J (2003) Mixed alkali effect in borate glasses-EPR and optical absorption studies in xNa2O.(30-x)K2O-70B2O3 glasses doped with Mn2+. In: Journal of Physics and Chemistry of Solids, 64 (4). pp. 641-650.
Ratnakaram, YC and Altaf, Abdul Md and Chakradhar, Sreekanth RP and Rao, JL and Ramakrishna, J (2003) Influence of Nd3+ concentration on its optical absorption and luminescence properties in potassium borate glass. In: Physica Status Solidi (b), 236 (1). pp. 200-208.
Chakradhar, Sreekanth RP and Ramesh, KP and Rao, JL and Ramakrishna, J (2003) Mixed alkali effect in borate glasses-electron paramagnetic resonance and optical absorption studies in $Cu^{2+}$ doped $xNa_2O-(30 - x)K_2O-70B_2O_3$ glasses. In: Journal of Physics: Condensed Matter, 15 (9). pp. 1469-1486.
Ratnakaram, YC and Chakradhar, Sreekanth RP and Ramesh, KP and Rao, JL and Ramakrishna, J (2003) Mixed alkali effect in borate glasses-optical absorption studies in ${Ho}^{3+}$ doped $x(Na_2O) . (30 - x )(K_2O) . 70(B_2O_3)$ glasses. In: Journal of Materials Science, 38 (4). pp. 833-841.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Chandrappa, GT and Ramesh, KP and Rao, JL (2003) Electron Paramagnetic Resonance studies of Mn2+ activated willemite phosphor. In: DAE Solid State Physics Symposium, Dec 26 - 30, 2003, Gwalior,India.
Chakradhar, Sreekanth RP and Nagabhushana, BM and Chandrappa, GT and Ramesh, KP and Rao, JL (2003) Solution combustion derived Zn2SiO4 : Mn green phosphors - A photo luminescence study. In: DAE Solid State Physics Symposium, Dec 26 - 30, 2003., Gwalior,India.
Ratnakaram, YC and Reddy, Viswanadha A and Chakradhar, Sreekanth RP (2002) Electronic absorption spectra and energy gap studies of Er3+ ions in different chlorophosphate glasses. In: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 58 (8). pp. 1809-1822.
