List of Publications (S. Ravi)

 

Sign reversal of magnetization and tunable exchange bias field in NdCr 1- x Fe x O 3 ( x = 0.05 0.2)

Tribedi Bora and S. Ravi, Journal of Magnetism and Magnetic Materials (In Press 2015)
 

Effect of post annealing process on electrical and magnetic properties of Nd 0.7 Sr 0.3 MnO 3 thin films

T. R. Gopalarao, S. Ravi and D. Pamu, Journal of Superconductivity and Novel magnetism, DOI 10.1007/s10948-014-2879-3, (In Press 2015)
 

Study of exchange bias and training effect in NiCr 2 O 4

Junmoni Barman, Tribedi Bora and S. Ravi, Journal of Magnetism and Magnetic Materials 385 (2015) 93-98
 

Study of exchange bias behavior in Ni(Cr 1- x Fe x ) 2 O 4

Junmoni Barman and S.Ravi, Solid State Communications 201 (2015) 59-63

 

Sign reversal of magnetization and ferromagnetism in NdCr 1- x Mn ­ x O 3 ( x = 0 0.50)

Tribedi Bora and S. Ravi, Journal of Superconductivity and Novel magnetism 28 (2015) 869-872.

 

Bipolar switching of magnetization and tunable exchange bias in NdCr 1- x Mn x O 3 ( x = 0.0 0.30)

Tribedi Bora and S. Ravi, Journal of Applied Physics 116 (2014) 063901_1 to 6

 

Exchange bias in non-collinear spin-spiral system Co(Cr 1- x Co x ) 2 O 4 ( x = 0.0 0.1)

R. Padam, S. Ravi, S. Ramakrishnan, A. K. Grover and D. Pal , Journal of Magnetism and Magnetic Materials 371 (2014) 144-148.

 

Entanglement of lock-in transition and exchange bias in Co(Cr 0.9 Co 0.1 ) 2 O 4

R. Padam, S. Ravi and D. Pal Physica B: condensed matter 448 (2014) 191-193

 

Effect of Ce doping on the magnetic properties of LaCrO 3

Tribedi Bora and S. Ravi ,Physica B: Condensed Matter 448 (2014) 233-236

 

Ferromagnetism and Ferroelectricity in Fe doped BaTiO3

Bipul Deka, S. Ravi , A Perumal and D. Pamu , Physica B: Condensed Matter 448 (2014) 204-206

 

Negative magnetization and the tunable exchange bias field in LaCr 0.8 Mn 0.2 O 3

Tribedi Bora and S. Ravi , Journal of Magnetism and Magnetic Materials 358 (2014) 208 - 211

 

Sign Reversal of Magnetization Reversal and Exchange Bias Field in LaCr 0.85 Fe 0.15 O 3

Tribedi Bora and S. Ravi Journal of Applied Physics 114 (2013) 183902-1 to 5

 

Study of Magnetization Reversal in LaCr 1-x Fe x O 3 Compounds,

Tribedi Bora and S. Ravi , Journal of Applied Physics 114 (2013) 033906-1 to 8.

 

Optical Properties of Ambient Temperature Grown Nanocrystalline Mg2TiO4 Thin films Deposited by RF Magnetron Sputtering

R. K. Bhuyan, T. Santhosh Kumar, A. Perumal , S. Ravi , and D. Pamu ,Surface & Coatings Technology 221 (2013) 196

 

Magnetic compensation effect and phase reversal of exchange bias field across compensation temperature in multiferroic Co(Cr 0.95 Fe 0.05 )2O4,

R. Padam, Swati Pandya, S. Ravi , A. K. Nigam, S. Ramakrishnan, A. K. Grover, and D. Pal, Applied Physics Letters 102 (2013) 112412- 1 to 4

 

Ferromagnetism in Mechanically Milled Pure SnO2,

Sunita Mohanty, Manoranjan Kar and S.Ravi , International Journal of Modern Physics B, 27 (2013) 1350025.

 

Critical Behavior of Ferromagnetic Transition in SnO2 based Diluted Magnetic Semiconductor,

Sunita Mohanty and S.Ravi, Journal of Superconductivity and Novel Magnetism, 26 (2013) 157-164

 

Antiferromagnetism and the Effect of Exchange Bias in LaCr 1-x Fe x O 3 (x= 0.40 to 0.60),

Tribedi Bora, P. Saravanan and S. Ravi , Journal of Superconductivity and Novel Magnetism 26 (2013)1645-1648

 

Structural and Magnetic Properties of Co ( Cr 1- y Al y ) 2 O 4 ( y = 0 . 00 . 2) Compounds,

R. Padam, D. Pal, S.Ravi, A.K. Grover and S. Ramakrishnan, Journal of Superconductivity and Novel Magnetism 26 (2013)1607-1610

 

Particle size effects on the suppression of charge-ordering in Nd 0.8 Na 0.2 MnO 3 B.

Samantaray, S. K. Srivastava, S. Ravi, Journal of Applied Physics 111 (2012) 013919-1 to 12.

 

Ferromagnetism in mechanically milled Sn 1-x Co x O 2 (x=0 to 0.10) compounds;

Sunita Mohanty, S. Ravi; Journal of Superconductivity and Novel Magnetism 25 (2012)1017-1023

 

Magnetic structure and magnetic properties of Nd 1-x Na x MnO 3 compounds;

B.Samantaray, S. Ravi, A.Das, S.K. Srivastava, , Journal of Applied Physics 110 (2011) 093906-1 to 9. .

 

Large enhancement of giant magnetoimpedance property in electrodeposited NiFe/Cu wire with copper additive in plating bath;

A.Chandra Mishra, T.Shaoo, V. Srinivas, A.K.Thakur, B.Samantaray, S. Ravi, Solid State Communications 151 (2011) 1787-1790.

 

Ferromagnetism and Bound Magnetic Polaron Behavior in (In 1-x Co x )2O3;

Tribedi Bora, B. Samantaray, S. Mohanty and S. Ravi , IEEE Magnetics 47 (2011) 3991-3994.

 

Magnetic dynamics of charge ordered Nd 0.80 Na 0.20 MnO 3 compound;

B. Samantaray, S. K. Srivastava, S. Ravi, Journal Mangnetism and Magnetic Materials 323 (2011) 2622-2626.

 

Neutron powder diffraction study in La 0.85 Ag 0.15 MnO 3;

B. Samantaray, S. K. Srivastava, S. Ravi, I. Dhiman, A. Das, Journal of Superconductivity and Novel Magnetism 24 (2011) 1933-1937.

 

Structural and Magnetic Properties of Nanocrystalline Sn 0.98 Co 0.02 O 2­ under different annealing conditions;

S. Mohanty, S.Ravi, H.S. Jena, V. Manivanan, International Journal of Nanoscience 10 (2011) 313-317.

  Neutron powder diffraction studies and magnetic properties in Nd 1-x K x MnO 3 (x=0.15 and 0.20) compounds, B.Samantaray, S.Ravi, A. Perumal, I.Dhiman, A.Das, Journal of Applied Physics 109 , (2011) 07E150-1 to 3
 

Ferromagnetic and charge-ordered phases in (Nd,Na)-Mn-O Compounds;

B. Samantaray and S. Ravi, Journal of Superconductivity and Novel Magnetism 24 (2011) 809-814.

 

Critical behaviour studies in ferromagnetic (Nd,K)-Mn-O compounds Nd 1-x K x MnO 3 (x = 0.16 and 0.21);

B. Samantaray, S.Ravi and A. Perumal, Journal Mangnetism and Magnetic Materials 322 (2010) 3391.  

 

Magnetic Properties of Sn 1-x Ni x O 2 based diluted magnetic semiconductors;

S. Mohanty and S. Ravi , Solid State Communications 150 (2010) 1570-1574.

 

Neutron Powder Diffraction Studies in LaMn1-xCuxO3 (x=0.05, 0.10 and 0.15) ;

B. Samantaray, S. K. Srivastava, S. Mohanty and S. Ravi , I. Dhiman and A. Das, Journal of Applied Physics 107 (2010) 09D719 -1 to 3

 

Ferromagnetism and bound magnetic polaron behavior in bulk Sn 1-x­ Co x O 2 ,

Sunita Mohanty and S. Ravi , Solid State Communications 150 (2010) 739-742

 

Structural, electrical and magnetic properties of  Co and Fe co-doped  ZnO nanoparticles prepared by solution combustion method.,

M.L. Dinesha, H.S. Jayanna, S. Mohanty and S. Ravi;  Journal alloys and compounds, 490 (2010) 618-623

 

Reentrant spin glass behavior in Nd0.84K0.12MnO3,

B. Samantaray and S. Ravi; Journal of Magnetism and Magnetic Materials 322 (2010) 2038-2042.

 

Magnetic Properties of Co doped SnO 2 Diluted Magnetic Semiconductors

S. Mohanty and S. Ravi; Indian Journal of Physics 84 (2010) 735-739

 

Magnetic properties of transition metal substituted (La­0. 85 Ag0.15)Mn1-yMyO3 compounds (M= Co, Cr & Al)

S. K.Srivastava,  S. Ravi; Journal of Magnetism and Magnetic Materials 321 (2009) 4072-4080.

 

Magnetic properties of Nd1-x KxMnO3 Compounds

B. Samantaray and S. Ravi; Journal of Magnetism and Magnetic Materials 321 (2009) 3671-3676

 

Role of Co substitution on the Crystal Structure and Electrical Resistivity of (La0.85Ag0.15)MnO3 Compounds

S. K. Srivastava and S. Ravi; Journal of Superconductivity and Novel Magnetism 22 (2009) 651-658

 

Magnetic Properties of Nd1-xAgxMnO3 Compounds

S.K.Srivastava, S. Ravi, Journal of Physics: Condensed Matter 20, (2008) 505212-1 to 8.

 

Neutron powder diffraction studies in CaMn­ 1-xCuxO3 (x = 0, 0.2)

S. Ravi, Manoranjan Kar, S. M. Borah, and P. S. R. Krishna

Crystal Research and Technology,  43,  (2008) 1318-1322

 

Electrical Transport and Magnetic Properties of La0.85Ag0.15(Mn1-y Aly) O3

S. K. Srivastava, Manoranjan Kar, S. Ravi

Indian Journal of Physics 82 (2008) 695-699.

 

Magnetic Properties of Electron Doped  Y1-xCexMnO3 Compounds.

S.K.Srivastava, Manoranjan Kar, S. Ravi, P.K. Mishra, P.D. Babu

Journal of Magnetism and Magnetic Materials  320, (2008) 2382-2386.

 

Ferromagnetic Insulating and Spin Glass Behavior in Cr Substituted La0.85Ag0.15MnO3 Compounds

S. K. Srivastava, Manoranjan Kar and S. Ravi

Journal of Physics: Condensed Matter 20, (2008) 235201-1 to7.

 

Effect of Co doping on the Magnetic Properties of La0.85Ag0.15(Mn1-yCoy)O3

S. K. Srivastava, Manoranjan Kar and S. Ravi

Journal of Magnetism and Magnetic Materials  320, (2008) e107-e110.

 

Study of Critical Current Density from ac susceptibility measurements in  (La1-xYx)2Ba2CaCu5Oz

P.K. Nayak and S. Ravi

Indian Journal of Physics 82 (2008) 603-610.

 

Magnetic and Martensitic Transformations in Ni-Fe-Ga Alloy

M. Raghusankar, S. Sarma,S. Ravi and A. Srinivasan

Indian Journal of Physics 82 (2008) 169-172.

 

Preparation, characterization and magnetic properties of hexagonal Y1-x­CexMnO3

S.K.Srivastava, Manoranjan Kar and S. Ravi

Indian Journal of Physics 82 (2008) 195-200.

 

Effect of Al Substitution on La0.85Ag0.15MnO3 Double Exchange Ferromagnetic Compound.

S. K. Srivastava, Manoranjan Kar and S. Ravi

Materials Science and Engineering B, 147 (2008) 84-89.

 

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 19  (2007) 2819-2823

 

Excess conductivity and magneto-conductivity studies in pure and Ag doped (La1-xYx)2Ba2CaCu5Oz  Superconductors

P.K. Nayak and S. Ravi

Superconductor Science and Technology 19 (2006) 1209-1214.

 

Excess Conductivity in the Paracoherence Regime of pure and Ag doped (La1-xYx)­2Ba2CaCu5Oz superconductors

P. K. Nayak and S. Ravi

Solid State Communications 140 (2006) 464-468.

 

Study of Magneto-Conductivity in (La­1.6Y0.4)Ba2-Ca0.8Cu4.8Oz  Superconductors.

P. K. Nayak and  S. Ravi

Journal of Superconductivity and Magnetism 19 (2006) 515-520.

 

Linear and Non-linear AC Susceptibility Studies in La(Mn1-x­Cux)O3

S.K. Srivastava, Manoranjan Kar and S. Ravi

Journal of Magnetism and Magnetic Materials 307 (2006) 318-324.

 

AC Susceptibility and Intergranular Critical Current Density Study in Pure and Ag doped  (La1-xYx)Ba2CaCu5Oz Superconductors.

P.K. Nayak and   S. Ravi

Solid State Communications 138 (2006) 377-381.

 

Critical Behaviour Studies in La1-xAgxMnO3 Double Exchange Ferromagnet

Manoranjan Kar,  A. Perumal and S. Ravi

Physica Status Solidi (b) 243 (2006) 1908-1913.

 

Study of Electrical Transport and Magnetic Properties in CaMn1-xCuxO3

Manoranjan Kar, S.M. Borah and S. Ravi

Materials Science and Engineering B 129 (2006) 54-58.

 

Electrical Resistivity and Ac Susceptibility Studies In Sr1-xLaxMnO3

Manoranjan Kar and S. Ravi

Modern Physics Letters B 20 (2006) 1517-1528.

 

Excess Conductivity in the Mean Field and Paracoherence Regimes of (La­1.6Y0.4)Ba2Ca0.8Cu4.8Oz  Superconductors

P. K. Nayak and S. Ravi

Modern Physics Letters B 20 (2006) 111-122.

 

Study of AC Susceptibility and Magneto-Resistivity in Ba1-xLaxMnO3 (x =0.30 to 0.70) Compounds

Manoranjan Kar and S. Ravi

Materials Science and Engineering B 123 (2005) 95-101.

 

AC Susceptibility Studies in Single Phase Bi-2223 System

S.Keshri, V. Dayal, S. Ravi and  P.K. Nayak

Czechoslovak Journal of Physics  55 (2005) 74-84.

 

Study of Electrical Transport and AC Susceptibility in LaMn1-xCuxO3.

Manoranjan Kar and S. Ravi

Modern Physics Letters B 19 (2005) 317- 330.

 

Electrical Resistivity and AC susceptibility Studies in La1-xAgxMnO3

Manoranjan Kar and S. Ravi

Materials Science and Engineering B 110 (2004) 46 - 51.

 

Study of structural, magnetic and electrical transport Properties in La1-xCuxMnO3

Manoranjan Kar and S. Ravi

Materials Science and Engineering B 107 (2004) 332 – 336.

 

Study of Magneto-Resistivity in La1-xAgxMnO3 Compounds

S. Ravi  and Manoranjan Kar

 Physica B 348 (2004) 169-176.

 

Study of Structural, Electrical Transport and Magnetic Properties in La1-xAgxMnO3 Compounds

Manoranjan Kar and S. Ravi

Modern Physics Letters B 18 (2004) 221-231.

 

Transport and Thermal Properties of  Bi1.2Pb0.33Sr1.54Ca2.06Cu3Oy Superconductor.

V.Dayal, S. Keshri, P.K. Nayak and S.Ravi

Indian Journal of Cryogenics 28 (2003) 122-126

 

Metal-Insulator Transition in Electron Doped Ba1-xLaxMnO3 Compounds

Manoranjan Kar and S. Ravi

Pramana- Journal of Physics, 58 (2002) 1009 - 1012.

 

Distribution of Critical Current Density on Bi-110 K Superconductor from AC Susceptibility Study.

S. Ravi, Physica C 330 (2000) 58-64.

 

Universal Behaviour of AC Susceptibility of Granular (Bi1.2Pb0.3)Sr1.5Ca2Cu3Oy Superconductor

S. Ravi Physica C 295 (1998) 277-286

 

Magneto-Conductivity of NdBa2Cu3O7 Thin Film in the Paraconductivity and Paracoherence Regimes

Narayani Senthil-kumaran, S.Ravi,       K. Sethupathi,            V. Sankaranarayanan & G. Rangarajan

Advances in Superconductivity, New Materials, Critical Currents & Devices, Ed. Pinto et al., (1998)

239-244

 

Magneto-Conductivity in NdBa2Cu3O7 Thin Film

Narayani Senthil-kumaran, S.Ravi,   K. Sethupathi,  K. Sreenivas,  G. Rangarajan,

IEEE Transactions on Magnetics 32 (1996) 4663-4665

 

Magnetization and Critical State Models in YNi2B2C

Narayani Senthil-kumaran, S.Ravi, G. Rangarajan, Czechoslovak Journal of Physics 46 (1996)  837-838.

 

Magnetization Study of Superconducting Grains in Bi.2.1Sr1.9CaCu2Oy

S. Uma, S. Ravi,  G. Rangarajan, Physica C 253 (1995) 225-230

 

Excess Conductivity Studies in the Paracoherence Region of (Bi,Pb)-Sr-Ca-Cu-O Superconductor.

E.Isaac Samuel, S. Ravi V. Seshu Bai, Solid State Communications 96 (1995) 441-444.

 

Universal Behaviour of Susceptibility in the 110 K Phase of (Bi,Pb)-Sr-Ca-Cu-O Superconductor

N. Hari Babu,T. Rajasekharan, S. Ravi,  V. Seshu Bai, Physical Review B 52 (1995) 13605-

13609

 

AC Susceptibility Study in the 85 K Phase of Bi-Sr-Ca-Cu-O Superconductor

S. Ravi, V.Seshu Bai Physica C 230 (1994) 51-60.

 

AC Susceptibility Study in the 110 K Phase of Bi-Sr-Ca-Cu-O

S. Ravi , V. Seshu Bai Physical Review B   49 (1994) 13082-13088

 

Zero Field Excess Conductivity Studies in the Bi-Sr-Ca-Cu-O System

S. Ravi,  V. Seshu Bai Modern Physics Letters B 6 (1992) 1857-1865.

 

Excess Conductivity Studies in Pure and Ag Doped 85 K phase in Bi-Sr-Ca-Cu-O System

S. Ravi, V. Seshu Bai Solid State Communications  83 (1992) 117-121. 

 

Fluctuations Induced Excess Conductivity in the Bi1.2Pb0.3Sr1.5Ca2Cu3Oy Compound

S.Ravi, V.Seshu Bai, Physica C 182 (1991) 345-350 .

 

On the composition of 110K Superconductor in (Bi,Pb)-Sr-Ca-Cu-O System

V. Seshu Bai, S.Ravi, T.Rajaseharan, R.Gopalan, Journal of Applied Physics 70 (1991) 4378-4382

 

A New Co-Precipitation Technique for the Preparation of Superconducting Oxides.

Y.S.N. Murthy, R.Gopalan, Sarala Raoot, T.Rajasekharan, S. Ravi, V.Seshu Bai

Materials Letters 9 (1990) 154-156.

 

Combustion Process for the Synthesis of YBa2Cu3O7 High Tc Superconductors

R. Gopalan, Y.S.N.Murthy, T.Rajasekharan, S.Ravi, V.Seshu Bai, Materials Letters 8 (1989)

441-443.

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