Publications of Dr Devendra Kumar

1. C.R. Gautam, A.K. Sahu, O. Parkash and D. KumarDielectric Behaviour of Lead Strontium Titanate Glass Ceramics Doped with La2O3Proc. RAIM 2002 (in Press)
2. A.K. Sahu, D. Kumar, Om Parkash, O.P. Thakur and Chandra PrakashEffect of K2O/BaO ratio on Crystallization, Microstructure and Dielectric Properties of Strontium Titanate Borosilicate Glass CeramicsCeram. Int.(In Press)
3. O. Parkash, D. Kumar, C.C. ChristopherPreparation Structure and Dielectric Behaviour of the System Sr1-xLaxTi1-xFexO3 (x < 0.50)Proc. Indian Acad. Sci. (Chem. Sci.) 115, 649 (2003)
4. A.K. Saha, D. Kumar, O. Parkash, A. Sen and H.S.MaitiEffect of Phosphours Addition on the Sintering and Dielectric Properties of Pb(Zr0.52Ti).48O3Mater. Res. Bull. 38, 1165 (2003)
5. A.K. Sahu, D. Kumar, Om Parkash, O.P. Thakur and Chandra PrakashDielectric Properties of Glass Ceramics in the System[(Pb1-xSrx)O.TiO2)] - [2SiO2.B2O3] - [K2O]Brit. Ceram. Trans. 102, 148 (2003)
6. A.K. Sahu, D. Kumar and Om ParkashCrystallization of Lead-Strontium Titanate Perovskite Phase in [(Pb1-xSrx)O.TiO2] - [2SiO2.B2O3] - [K2O] Glass CeramicsBrit. Ceram. Trans. 102, 139 (2003)
7. R.K. Katare, L. Pandey, O.P. Thakur, O. Parkash and D. KumarEquivalent Circuit Model of Ca1-xYxTi1-xCoxO3 Using Impendance SpectroscopyModern Phys. Letts., B, 17, 339 (2003)
8. O. P. Thakur, D. Kumar, Om Parkash and L. pandeyDielectric and impedance spectroscopic behaviour of alkali oxide containing glass ceramics in the system [SrO.TiO2] - [2SiO2.B2O3]J. Ceram. Processing Research 3, 253 (2002)
9. O. P. Thakur, D. Kumar, Om Parkash and L. PandeyIn-commensurate Crystal Growth Behaviour in strontium Titanate Glass Ceramic SystemModern Phys. Letts., B, 16, 1037 (2002)
10. O. P. Thakur, D. Kumar, Om Parkash and L. PandeyElectrical characterization of strontium titanate borosilicate ceramics system with bismuth oxide addition using immittance spectroscopyMaterils Chem. Phys., 78, 751 ( 2003)
11. O. P. Thakur, D. Kumar, Om Parkash and L. PandeyEffect of cobalt oxide addition on the crystallization behaviour of [SrO.TiO2] - [2SiO2.B2O3] glass ceramic systemJ. Ceram. Processing Research, 3 , 253 (2002)
12. O. P. Thakur, D. Kumar, Om Parkash and L. Pandey Influence of Nb2O5 addition on crystallization, microstructure development and dielectric behaviour of strontium titanate borosilicate glass ceramic systemInd. J. Phys., 76A, 435 (2002)
13. O. P. Thakur, D. Kumar, Om Parkash and L. PandeyCrystallization, microstructure development and dielectric behaviour of glass ceramics in the system [SrO.TiO2] - [2SiO2.B2O3] - La2O3J. Mater. Sci., 37, 2597 (2002)
14. Lakshman Tiwari, Sanak Mishra, Devendra Kumar and R. K. SinhaReaction Sintering Behaviour in Alumina-Zircon SystemTrans. Ind. Ceram. Soc., 60, 130 (2001)
15. Shail Upadhyay, Om Parkash and Devendra Kumar Solubility of lanthanum, nickel and chromium in barium stannateMater. Letts., 49, 251 (2001)
16. C. R. Gautam, R. K. Dwivedi, D. Kumar and Om Parkash Synthesis and electrical conduction behaviour of strontium yttrium titanium cobalt oxide (Sr1-xYxTi1-xCoxO3, 0.01 £ x £ 0.10)Mater. Letts., 50, 254 (2001)
17. R. K. Dwivedi, D. Kumar and O. ParkashStructure and dielectric behaviour of valence compensated perovskite oxide Sr1-xLaxTi1-xCrxO3 ceramicsBrit. Ceram. Trans., 100, 115 (2001)
18. Shail Upadhyay, Om Parkash and Devendra Kumar Dielectric relaxation and conduction in the system Ba1-xLaxSn1-xCrxO3J. Mater. Sci., 12, 165 (2001)
19. R. K. Dwivedi, D. Kumar and O. Parkash Valence compensated perovskite oxide system Ca1-xLaxTi1-xCrxO3Part I : Structure and dielectric behaviourJ. Mater. Sci., 36, 3641 (2001)
20. R. K. Dwivedi, D. Kumar and O. Parkash Valence compensated perovskite oxide system Ca1-xLaxTi1-xCrxO3Part II : Electric transport behaviourJ. Mater. Sci., 36, 3649 (2001)
21. R. K. Dwivedi, D. Kumar and O. ParkashValence compensated perovskite oxide system Ca1-xLaxTi1-xCrxO3Part III : Impedance SpectroscopyJ. Mater. Sci., 36, 3657 (2001)
22. R. K. Dwivedi, Devendra Kumar and Om ParkashDielectric relaxation in valence compensated solid solution Sr0.65La0.35Ti0.65Co0.35O3J. Phys. D : Appl. Phys., 33, 88 (2000)
23. Shail Upadhyay, Devendra Kumar and Om Parkash, Dielectric behaviour of valence compensated system Ba1-xLaxSn1-xNixO3,Brit. Ceram. Trans., 99, 225 (2000)
24. Om Parkash, D. Kumar, K. K. Srivastava and R.K. Dwivedi,Electrical conduction behaviour of cobalt doped BaSnO3J. Mater. Sci., 36, 5805 (2000)
25. R. K. Dwivedi, Devendra Kumar, Om Parkash and Lakshman Pandey Effect of Processing Route on Dielectric Behaviour of Valence Compensated Sr0.50Ca0.15LaO.35 Tio.65 Co 0.35 O3 Ceramics Ceramic International, 26, 13 (2000)
26. Rajesh K. Katare, Lakshman Pandey, R.K. Dwivedi, Om Parkash and Devendra KumarA novel technique for measurement of magnetic permeability of ceramics Indian J. Mat. Sci. & Engg., 6, 34 (1999)
27. Shail Upadhyay, Ashok Kumar Sahu, Devendra Kumar and Om Parkash Probing Electrical Conduction Behaviour of BaSn03J. Appl. Phys., 84, 828 (1998)
28. Lakshaman Pandey, R.K. Katare, Om Parkash and Devendra Kumar Complex Impedance Analysis of Electronic Ceramic Showing Steeply Rising Impedance Pattern at Low Frequency Ind. J. Pure and Appl. Phys. 36 (1998)
29. Shail Upadhyay, Devendra Kumar and Om Parkash A Detailed Investigation of the Relaxor Like behaviour of Sr1-x Lax Ti1-x CoxO3 System Trans. Ind. Ceram. Soc. 56, 96 (1997)
30. Ashok K. Sahu, Om Parkash and Devendra KumarPreparation and Structure of the System (Na1-xLax) (Nb1-2x/3Mg2x/3)O3 with x = 0.51, 0.50, 0.435 and 0.4275J. Mater. Sci. Letts., 16, 971 (1997)
31. L. Pandey, R.K.Katare, Om Parkash and D KumarEvidence of Two Ferroelectric PTCR Components in Valence Compensated Ceramic System Ba1-xLaxTi1-xCoxO3 Bull. Mater.Sci., 20, 933 (1997)
32. Devendra Kumar,Shail Upadhyay and Om ParkashTape Casting and its Characterization for Sr0.65La0.35Ti0.65Co0.35O3 Mater. Letts., 32, 151 (1997)
33. Shail Upadhyay,Om Parkash and Devendra KumarPreparation and Characterization of Barium StannateJ. Mater. Sci. Letts., 16, 1330 (1997)
34. O.P.Thakur, D. Kumar, Om Parkash and L. PandeyCrystallization and Microstructural Behaviour of Strontiun Titanate Borosilicate Glass Ceramic with Bi2O3 AdditionBull. Mater. Sci., 20, 67 (1997)
35. R. K. chaturvedi and Devendra KumarThe Action of Some Organic Compounds on the Corrosion of Window GlassAnti. Corrosion Methods & Materials,44,37 (1997)
36. O.P.Thakur, D. Kumar, Om Parkash and L. PandeyDielectric Behaviour of Strontium Titanate Glass Ceramics with Bismuth Oxide Addition as Nucleating AgentInd. J. Phys., 71A, 161 (1997)
37. Om Parkash, K.D.Mandal, C.C.Christopher, M.S.Sastry and Devendra KumarDielectric Behaviour of Sr1-xLaxSn1-xCoxO3J. Mater. Sci., 31, 4705 (1996)
38. R.K.Dwivedi, Om Parkash, C.C.Christopher, Devendra Kumar and L. PandeyEffect of Processing Route and Parameters on Dielectric Properties of the Valence compensated Composition Sr0.65La0.35Ti0.65Co0.35O3 systemJ. Mater. Sci. Letts., 15, 1865 (1996)
39. Shail Upadhyay,Devendra Kumar and Om ParkashEffect of compositional variation on dielectric properties of the Sr1-xLaxTi1-xCoxO3 system(0.25 < x < 0.37)Bull. Mater. Sci., 19, 513 (1996)
40. O.P.Thakur, D. Kumar, Om Parkash and L.PandeyEffect of 1 wt% CoO addition on dielectric and microstructural behaviour of (SrO.TiO2) - (2SiO2.B2O3) glass and glass ceramicsBull. Mater. Sci., 19, 393 (1996)
41. L. Pandey, Om Parkash and Devendra KumarOn the sample holder correction in the complex impedance analysis of electronic ceramicsInd. J. Pure & Appl. Phys., 34, 28 (1996)
42. O.P.Thakur, D. Kumar, Om Parkash and L. PandeyDielectric and Microstructural Behaviour of Strontium Titanate Borosilicate Glass Ceramic SystemBull. Mater. Sci., 18, 577(1995)
43. L. Pandey, Om Parkash, R. K.Katare and D.KumarEquivalent Circuit Model for Electronic CeramicsBull. Mater. Sci., 18, 563 (1995)
44. R. K. chaturvedi and Devendra KumarThe Corrosion Behaviour of Window Glass in WaterTrans. Ind. Ceram.Soc., 54, 16 (1995)
45. O.P.Thakur, D. Kumar, Om Parkash and L. PandeyEffect of K2O adiition on crystallization and microstructural behaviour of strontium titanate borosilicate glass ceramic systemJ. Mater. Letts., 23, 253 (1995)
46. Om Parkash, L. Pandey and Devendra KumarStudy of Electrical Conduction Behaviour of Sr1-xLaxTi1-xNixO3 by Impedance spectroscopyJ. Alloys and Compounds, 206, 147 (1994)
47. Om Parkash,Devndra Kumar and Ch. Durga PrasadElectrical Conduction in the Sr1-xLaxTi1-xNixO3 (x< 0.40) SystemJ. Phys. D : Appl. Phys., 27, 1509 (1994)
48. Om Parkash, K. D. Mandal, C.C. Christopher, M. S. Sastry and Devendra KumarPreparation and Characterization of Strontium StannateJ. Mater. Sci. Letts., 13, 1616 (1994)
49. Om Parkash, K. D. Mandal, C.C. Christopher, M. S. Sastry and Devendra KumarElectrical behaviour of lanthanum and cobalt doped strontium stannateBull. Mater. Sci., 17, 253 (1994)
50. C. N. Pathak, R. K. Sinha and Devendra KumarThermal studies on MgSO4.7H2O-Al2O3-SiO2 glass melting and crystallizationProc. National Symposium on High-tech Ceramics, Varanasi, 100 (1993)
52. Rajiv Kumar Sharma and Devendra KumarTesting and Machinability of machinable glass ceramicsProc. National Symposium on High-tech Ceramics, Varanasi, 89 (1993)
53. O.P.Thakur, Om Parkash, L. Pandey and D. KumarDielectric Behaviour of Glass Ceramics in the System (SrO.TiO2)-(SiO.TiO2) - Bi2O3 Proc. National Symposium on High-tech Ceramics, Varanasi, 70 (1993)
54. K.D.Mandal, Om Parkash, C.C.Christopher, M.S.Sastry and Devendra KumarPreparation and Structure of Compounds in the system Sr1-xLaxSn1-xCoxO3Cryst. Res. Technol., 28, K27 (1993)
55. Om Parkash, H.S.Tewari, V.B.Tare and D. KumarElecrtrical conduction in calcium yttrium titanium cobalt oxide Ca1-xYxT1-xCoxO3 (x < 0.15)J. Phys. D : Appl. Phys., 26, 676 (1993)
56. Om Parkash, H.S.Tewari, V.B.Tare and D. KumarStudy of Electrical Conduction Behaviour of Ba1-xLaxT1-xNixO3 (x < 0.10) SystemJ. Alloy and Comp., 190, 243 (1993)
57. Om Parkash, L. Pandey, H.S.Tewari, V.B.Tare and Devendra KumarStudy of Electrical Conduction Behaviour of the System La1-xNaxTi1-xNixO3 ( x > 0.50)J. Am. Ceram. Soc., 75, 3141 (1992)
58. Om Parkash, D. Kumar and Ch. Durga PrasadDielectric Properties of the System Ba1-xLaxTi1-xCoxO3J. Mater. Sci., 26, 6003 (1991)
59. H.S.Tewari, Om Parkash, V.B. Tare and D. KumarDielectric Properties of the System Ca1-xYxTi1-xCoxO3 (0.00 < x < 0.15)J. Mater. Sci., 25, 2181 (1990)
60. Om Parkash, Devendra Kumar, Ch. Durga Prasad and H. S. TewariElectrical conduction in calcium lanthanum titanium cobalt oxide Ca1-xLaxTi1-xCoxO3 (x £ 0.50)J. Phys. D : Appl. Phys., 23, 342 (1990)
61. Om Parkash, Ch. Durga Prasad and D. KumarDielectric Relaxor Behaviour of the System Sr1-xLaxTi1-xCoxO3 (x £ 0.40)J. Mater. Sci., 25, 487 (1990)
62. D. Kumar, Ch. Durga Prasad and Om ParkashElectrical Conduction Behaviour of the Solid Solution Ba1-xLaxTi1-xCoxO3 J. Phys. Chem. Solids, 51, 73 (1990)
63. Om Parkash, L. Pandey, H.S.Tewari, V.B.Tarre and Devendra KumarDielectric Relaxor Behaviour of Sr0.8La0.2Ti0.8Co0.2O3 Ferroelectrics, 102, 203 (1990)
64. Om Parkash, Ch. Durga Prasad and D. KumarPreparation and Characterization of the System Sr1-xLaxTi1-xCoxO3Phys. Stat. Sol.(a) 116, K81 (1989)
65. Om Parkash, L.Pandey, M.K.Sharma and D.KumarPreparation, Structure and Dielectric Properties of Sr1-xLaxTi1-xNixO3J. Mater. Sci., 24, 4505 (1989)
66. Om Parkash, H.S.Tewari, L.Pandey, R. Kumar and Devendra KumarPreparation, Structure and Dielectric Properties of Sr1-xLaxTi1-xNixO3J. Am. Ceram. Soc., 72, 1520 (1989)
67. Om Parkash, N. Chaturvedi, M. Tiwari and Devendra KumarStudies on the Spin-State Equilibria of Cobalt Ions in the System La1-xNaxCo1-xNbxO3 (x £ 0.40)Bull. Mater. Sci., 12, 53 (1989)
68. Devendra Kumar, P. K. Sakharkar, Om Parkash and Lakshman PandeyDielectric and Microstructural Behaviour of BaTiO3 Sintered in presence of a Crystallizable GlassJ. Mater. Sci. Letts., 8, 652 (1989)
69. Om Parkash, Ch. Durga Prasad and D. KumarPreparation and characterization of the System Ba1-xLaxTi1-xCoxO3 (x £ 0.5)J. Mater. Sci. Letts., 8, 475 (1989)
70. Ch. Durga Prasad, H.S.Tewari, Devendra Kumar and Om ParkashDielectric Properties of the System Ca1-xLaxTi1-xCoxO3 Bull. Mater. Sci., 11, 307 (1988)
71. Om Parkash, Ch. Durga Prasad and D. KumarPreparation and Characterization of the system Ca1-xLaxTi1-xCoxO3 (0.00 < x < 0.50)Bull. Mater. Sci., 11, 39 (1988)
72. H.S.Tewari, Om Parkash, V.B.Tare and D. KumarPreparation and Structure of the System (Ca1-xYx)(Ti1-xCox)O3J. Mater. Sci. Letts., 7, 1088 (1988)
73. Om Parkash, Ravindra Kumar, Ch. Durga Prasad and Devendra KumarCharacterization of Lanthanum Cobalt Magnesium Oxide Prepared by Co-precipitation Method.J. Phys. D: Appl. Phys., 21, 1512 (1988)
74. Ch. Durga Prasad, Om Parkash and D. KumarElectrical Properties of La1-xPbxCo1-xTixO3 ( x=0.05 and 0.10) J. Mater. Sci. Letts., 7, 789 (1988)
75. Om Parkash, D. Kumar and Ravindra KumarElectrical Conduction in the Solid Solution La1-xNaxCo1-xNbxO3 (0.01 £ x £ 0.99)Bull. Mater. Sci., 10, 245 (1988)
76. Om Parkash, Rabindra Kumar, Devendra Kumar and D. BahadurPreparation and structure of the System La1-xNaxCo1-xNbxO3 (0.01 £ x £ 0.99)J. Mater. Sci. Letts., 7, 383 (1988)
77. Om Parkash, Ch. Durga Prasad and D. KumarDielectric Properties of Lanthanum Lead Cobalt Titanium Oxide (La1-xPbx)(Co1-xTix)O3 (0.5£ x £ 0.9)Phys. Stat. Sol. (a) : 106, 627 (1988)
78. Om Parkash, Ch. Durga Prasad and D. KumarDefect Structure and Electrical Properties of Magnesium Substituted Strontium TitanateJ. solid State Chem., 74, 369 (1988)
79. R.K.Mandal, Ch. Durga Prasad, Om Parkash and Devendra Kumar Dielectric Behaviour of Glasses and Glass Ceramics in the system BaO-PbO-TiO2-B2O3-SiO2Bull. Mater. Sci., 9, 255 (1987)
80. V.K.Jain, V.S.Yadav, L. Pandey and D. KumarElectron Spin Resonance of VO2+, Mn2+ and Cu2+ in K2SO4-Na2SO4-ZnSO4 GlassesJ. Non-Cryst. Solids., 93, 426 (1987)
81. Om Parkash, Ch. Durga Prasad and D. KumarPreparation and Characterization of Lanthanum Lead Cobalt Titanium Oxide La1-xPbxCo1-xTixO3 (0 £ x £ 1)J. Solid State Chem., 69, 385 (1987)
82. Devendra Kumar, Om Parkash and Anju GuptaEnhanced Ionic Conductivity in the B2O3 - Li2O - LiCl Glasses Containing ZrO2 DispersionJ. Mater. Sci. Letts., 6. 729 (1987)
83. D. Kumar, Ch. Durga Prasad and Om ParkashElectrical Properties of the System Lanthanum Lead Cobalt Titanium OxideBull. Mater. Sci., 9, 123 (1987)
84. Om Parkash, D. Kumar and Anju GuptaEffect of Dispersion of Metallic Tin and Silicon Carbide on Ionic Conductivity of B2O3-Li2O-LiCl GlassesMater. Res. Bull., 22, 623 (1987)
85. Om Parkash, D.K.Gangopadhyay, D. Kumar, D. Bahadur, B.S.R.Murty and T.B.SinghElectron Transport and Magnetic Properties of the System LaCo1-xMgxO3 ( 0 < x £ 0.5)High Tech. Ceramics. P.Vincezini, Elsevier Science Publication 2039 (1987)
86. Om Parkash, Devendra Kumar and L. PandeyGlass Ceramics Containing Ferroelectric PhasesBull. Mater. Sci., 8, 557 (1986)
87. Om Parkash, D. Kumar, D.K.Gangopadhyay and D. BahadurElectrical Properties of La2TiMO6 (M = Fe, Ni, Cu and Zn)Phys. Stat. Sol. (a), 96, K79 (1986)
88. Devendra Kumar, Om Parkash, L. Pandey and R. RajgopalanAnomalous Dielectric Behaviour in PbO-BaO-TiO2-B2O3-SiO2 GlassesCollected Papers XIV Int. Cong. On Glass Vol I, 312 (1986)
89. Om Parkash, Devendra Kumar and R. RajgopalanMicrostructural and Dielectric Bahaviour of the Glass Ceramics in the System PbO-BaO-TiO2-B2O3-SiO2Bull. Mater. Sci., 8, 13 (1986)
90. D. Roy, Devendra Kumar and D. BahadurCharacterization of Al2Mn2.5Fe0.5Si3O12 GlassAdv. In Ceramics Vol 16, Part II, 627 (1986)
91. D. Roy, Devendra Kumar and D. BahadurCrystallization Behaviour and Magnetic Properties of Al2O3, Fe2O3, MnO, SiO2 GlassPhys. Stat. Sol. (a) 82, K11 (1984)
92. Devendra Kumar and D. ChakravortyElectrical Properties of Vanadium Phosphate Glasses Containing Antimony and Arsenic OxideJ. Phys. D : Appl. Phys., 15, 305 (1982)
93. D. Bahadur, Om Parkash and Devendra KumarElectron Transport in Hot Pressed Y3-xGdxFe5O12Bull. Mater. Sci., 3, 325 (1981)
94. Devendra Kumar and D. ChakravortyElectrical Properties of Silicate Glasses Containing Arsenic OxideJ. Phys. D: Appl. Phys., 13, 1331 (1980)
95. D. Chakravorty, D. Kumar and G.V.S. SastryElectrical Conduction in Silicate Glasses Containing Antimony OxideJ. Phys. D: Appl. Phys., 12, 2209 (1979)
96. D. Chakravorty, A.R. Haranahalli and D. KumarElectrical Properties of V2O5-P2O5 Glasses Containing Metallic ParticlesPhys. Stat. Sol. (a), 51, 275 (1979)