Department of Physics

Indian Institute Of Technology Madras , Chennai

Recent Publications

# Titles Authors Journal Year
1231 Nanocrystalline barium zinconate titanate synthesized at low temperature by an aques co-precipitation technique S .Bahskar Reddy, K. Prasad Rao and M.S. Ramachandra Rao Scripta Materialia 57, 591 (2007).

2007
1232 SPM Characterization of pulsed Laser Deposited Nanocrystalline CrN Hard Coatings G .Mangamma, K. Mohan Kant, M.S. Ramachandra Rao, S. Kalavathy, M. Kamruddin, S. Dash and A.K. Tyagi J .Nanosci. Nanotechnology 7, 2176 (2007).

2007
1233 Obesrvation of high permittivity in Ho substituted BaZr0.1Ti0.9O3 ceramics S.Bhaskar Reddy, M.S. Ramachandra Rao and K Prasad Rao Appl.Phy.Lett. 91, 022917 (2007).

2007
1234 Structural and dielectric characterization of Sr substituted Ba (Zr,Ti)) 3 based functional materials S .Bhaskar Reddy, M.S. Ramachandra Rao and K Prasad Rao Applied Physics A: Materials Science & Processing, A89, 1011 (2007).

2007
1235 Influnece of disorder on the low and high temperature magnetization and magnetoresistance in Pr0.6R0.1Sr0.3MnO3 (R =Tb,Y,Ho and Er ) manganite N. Rama , V .Sankaranarayanan , M.Opel, R.Gross and M. S . Ramachandra Rao, Journal of Alloys and Compounds 443 , 7 (2007).

2007
1236 Structural and luminescence properties of pulsed laser deposited green emitting Zn2SiO4:Mn phosphor thin films P.Thiyagarajan, M .Kottaisamy and M.S. Ramachandra Rao Scripta Materials 57(5), 433 (2007)

2007
1237 Improved luminescent properties of Zn2SiO4:Mn green phosophor prepared from a gel combustion synthesized ZnO:Mn-SiO2 P. Thiyagarajan , M. Koattaisamy and M. S. Ramachandra Rao J . Electrochem. Soc. 154 (4), H297-H303 (2007).

2007
1238 Electron Leakage and Double-Exchange Ferromagnetism at the Interface between a Metal and an Antiferromagnetic Insulator: CaRuO3/CaMnO3 B. R. K. Nanda, S. Satpathy, M. S. Springborg Phys. Rev. Lett.

Volume: 98 Page: 216804 DOI: http://dx.doi.org/10.1103/PhysRevLett.98.216804

2007
1239 Hydrogen absorption and desorption properties of Ho1-xMmxCo2alloys G. Srinivas, V. Sankaranarayanan and S. Ramaprabhu Int. J. Hydrogen Energy 32, 2480-2487

2007
1240 Diffusion of hydrogen in cubic Laves phase Ho1-xMmxCo2 (x = 0, 0.2 and 0.4) alloys. G. Srinivas, V. Sankaranarayanan and S. Ramaprabhu Int. J. Hydrogen Energy 32, 2965-2970

2007
1241 Thermodynamic and hydrogen-induced structural properties of Ho1-xMmxCo2-hydrides. G. Srinivas, V. Sankaranarayanan and S. Ramaprabhu J. Phys. D: Appl. Phys40, 1183-1189 (2007)

2007
1242 Influence of hydrogen absorption on structural and electrical transport properties of Ho1-xMmxCo2 alloys G. Srinivas, V. Sankaranarayanan and S. Ramaprabhu J. Appl. Phys.102, Issue 6, 063706(1-8) (2007)

2007
1243 Temperature and concentration dependent electrical resistivity of Ho1-xTixCo2-hydrogen system. G. Srinivas, V. Sankaranarayanan and S. Ramaprabhu Solid State Sciences9 , 973-979 (2007)

2007
1244 Magnetic and Electrical transport properties of DyxGd5-xSi2Ge2 (x = 0.0, 1.5, 2.5, 3.0, 3.5, 4.5 and 5.0) Compounds R. Nirmala, V. Sankaranarayanan, K. Sethupathi, A. V. Morozkin, Amish G. Joshi and S. K. Malik J. Magnetism and Magnetic Materials 309, 212

2007
1245 Synthesis of single phase Ce doped nanocrystalline LaMnO3 C. Krishnamoorthy, K. Sethupathi and V. Sankaranarayanan Materials Letters61, 3254-3257, (2007)

2007
1246 Magnetic and magnetotransport properties of Ce doped nanocrystalline LaMnO3. C. Krishnamoorthy, K. Sethupathi, V. Sankaranarayanan, R. Nirmala and S.K. Malik J.Alloys and Compounds 438, 1-7 (2007)

2007
1247 Magnetic and magnetoresistivity properties of nanocrystalline Nd0.7Sr0.3MnO3. C. Krishnamoorthy, K. Sethupathi, V. Sankaranarayanan, R. Nirmala and S.K. Malik Journal of Magnetism and Magnetic Materials 308,28-34(2007)

2007
1248 Hawking radiation as tunneling for spherically symmetric black holes: A generalized treatment Sudipta Sarkar, Dawood Kothawala Physcis Letters B

Volume: 659 Page: 683-687 DOI: 10.1016/j.physletb.2007.11.056

2007
1249 Einstein's equations as a thermodynamic identity: The cases of stationary axisymmetric horizons and evolving spherically symmetric horizons Dawood Kothawala, Sudipta Sarkar, T. Padmanabhan Physics Letters B

Volume: 652 Page: 338-342 DOI: 10.1016/j.physletb.2007.07.021

2007
1250 Charge Transport in Transparent Single-Wall Carbon Nanotube Networks, Manu Jaiswal, W. Wang, K.A.S. Fernando, Y.-P. Sun, R. Menon, J. Phys.: Condens. Matter, 19, 446006, (2007).

2007
1251 Magnetotransport in Transparent Single-Wall Carbon Nanotube Networks, Manu Jaiswal, W. Wang, K.A.S. Fernando, Y.-P. Sun, R. Menon, Physical Review B, 76, 113401, (2007).

2007
1252 Magnetoconductance in Single-Wall Carbon Nanotubes: Electron-Electron Interaction and Weak Localization Contributions, P.K. Choudhury, Manu Jaiswal, R. Menon, Physical Review B, 76, 235432, (2007).

2007
1253 Crystal Structure and Characterization of Pure and Ag doped (La1-xYx)2Ba2CaCu5Oz (0  x  0.5) Superconductors. P. K. Nayak and S. Ravi Journal of the American Ceramic Society

Volume: 90 Page: 2819-2823 DOI: 10.1111/j.1551-2916.2007.01845.x

2007
1254 The effect of TiO2 nanotubes in the enhancement of blood clotting for the control of hemorrhage; Somnath C. Roy, Maggie Paulose, Craig A Grimes; Biomaterials, 28, p 4667, (2007).

2007
1255 Large blue shift in the optical band-gap of sol-gel derived BST thin films; Somnath C Roy, G. L. Sharma, M. C. Bhatnagar; Solid State Communications 141, p 243 (2007).

2007
1256 Effect of Fe doping on the gas sensing properties of nano-crystalline SnO2 thin films; Sanju Rani, Somnath C. Roy, M. C. Bhatnagar; Sensors and Actuators B 122, p 204 (2007) .

2007
1257 Physical properties of multiferroic hexagonal HoMnO3 thin films P. Murugavel, J.H. Lee, D. Lee, T. W. Noh, Y.H. Jo, M. W Jung, Y. S. Oh, and K. H. Kim Appl. Phys. Lett. 90, 142902 (2007).

2007
1258 Epitaxial stabilization of artificial hexagonal GdMnO3 thin films and their magnetic properties D. Lee, J. H. Lee, P. Murugavel S. Y. Jang, T. W. Noh, Y. Jo, and M. H. Jung Appl. Phys. Lett. 90, 182504 (2007).

2007
1259 Effect of oxygen pressure on the interface related magnetic and transport properties of La0.7Ca0.3MnO3/BaTiO3 superlattices P. Murugavel, P. Padhan, and W. Prellier J. Phys.: Condens. Matter. 18, 3377 (2006).

2006
1260 Epitaxial Stabilization of a New Multiferroic Hexagonal Phase of TbMnO3 Thin Films J. H. Lee, P. Murugavel, H. Ryu, D. Lee, J. Y. Jo, J. W. Kim, H. J. Kim, K. H. Kim, Y. Jo, M. H. Jung, Y. H. Oh, Y. W. Kim, J. G. Yoon, J. S. Chung and T. W. Noh Adv. Mater. 18, 3125-3129 (2006)

2006