Publications of Dr Om Prakash

1. Rare Earth Cobaltite Catalysts: Relation of Activity to Spin and Valence State of Cobalt.
Om Parkash, P.Ganguly, G.Rama Rao, C.N.R.Rao, D.S.Rajoria and V.G.Bhide Mat. Res. Bull. , 9, 1173 (1974).

2. Electronic and Magnetic Properties of LaNi1-xCoxO3and LaCo1-xFexO3'
C. N. R. Rao, Om Parkash and P. Ganguly J. Solid State Chemistry,15, 186 (1975).

3. Electron Transport and Magnetic Properties of Rare Earth Ortho-Titanites and Vanadites LnTiO3 and LnVO3.P. Ganguly, Om Parkash and C. N. R. RaoPhys. Stat. Sol. (a) 36 669 (1976).

4. Itinerant Electron Ferromagnetism in Sr2+, Ca2+ and Ba2+ Doped Rare - Earth Orthocobaltites Ln3+1-x Mx2 +CoO3. C.N.R.Rao, Om Parkash, D.Bahadur,P.Ganguly and S.Nagbhushna J. Solid State Chemistry, 22, 353 (1977).

5. Anderson Transition in Ln1-xSrxCoO3 (Ln =Pr or Nd).C. N. R. Rao and Om Parkash Phil. Mag.35, 1111 (1977).

6. Electrical and Magnetic Properties of the System LaNi1-xFexO3 Om Parkash Proc. Indian Academy of Sciences,87A , 331 (1978).

7. LaNi1-xCoxO3 as Interconnection Material in Fuel Cells. Om Parkash Bulletin of Materials Science, 1, 67 (1979).

8. Electron Hopping in Eul-xSrxFeO3 and Nd1-xSrxCoO3. Veena Joshi, Om Parkash, C. N. R. Rao and G. N. Rao J. Chern. Soc. Faraday Transactions II, 75, 1199 (1979).

9. Characterization of Bubble Materials. M. J. Patni, Om Parkash and D. Bahadur Bull. Mats. Sci.,2, 83 (1980).

10. Electron Transport in Hot Pressed Y3-xGdxFe5012.D. Bahadur, Om Parkash and Devendra Kumar Bull. Mats. Sci., 3,325 (1981).

11. Magnetic and Electrical properties of Ti-Substituted Yttrium Iron Garnet. Om Parkash and D. Bahadur J. Appl. Phys.53 , 8336 (1982).

12. Electron Transport and Magnetic Properties of La1-xSrxCo1-yTiy03 ( = 0 or = y).
D. Bahadur and Om Parkash J. Solid State Chemistry, 46, 197 (1983).

13. Mossbauer Spectroscopy of Titanium Substituted Iron Garnets. C.M.Srivastava, S.N.Shringi, B.Uma Maheshwar Rao, D.Bahadur and Om Parkash Bull. Mats. Sci., 6, 17 (1984).

14. Mossbauer Studies of the System La1-xSrxCo1-yTiy03.V. Kumar, R.M. Singru, Om Parkash and D. Bahadur Phys. Stat. Sol. (b) 128, 222 (1985).

15. Microstructural and Dielectric Behaviour of Glass Ceramics in the System PbO-BaO-Ti02B203 -SiO2 . Om Parkash, Devendra Kumar and R. Rajgopalan Bull. Mats. Sci.,8 , 13 (1986).

16. Anomalous Dielectric Behaviour of Glasses in the System PbO-BaO-Ti02-B203-Si02.
Devendra Kumar, Om Parkash, Lakshman Pandey and R.Rajgopalan Collected Papers (IV World Congress on Glass, New Delhi,India, 1, 311 (1986).

17. Electrical Properties of the system La2TiM06 (M = Fe, Ni, Cu and Zn). Om Parkash, D.K. Gangopadhyay, Devendra Kumar and D. BahadurPhys. Stat. Sol. (a),96 , K79 (1986).

18. Glasses Containing Ferroelectric Phases. Om Parkash, Devendra Kumar and Lakshman Pandey
Bull. Mats. Sci.,8 , 657 (1986).

19. Electrical Transport and Magnetic Properties of the SystemLaCo1-x Mgx O3 (0.0< < 0.50).
Om Parkash, D.K. Gangopadhyay, Devendra Kumar, D. Bahadur,B.S.R. Murthi and T.B. Singh
High Tech. Ceramics ed. P. Vincenzini (Elsevier Science Publishers, Netherland, 1987) pp. 2039.

20. Diffuse Phase Transition in (Ba,Ca)Ti03 Ceramics. Dhananjai Pandey, V.S. Tewari, T.B. Singh, Lakshman Pandey, OmParkash and P. Ramachandra Rao Phase Transitions, 9, 11 (1987).

21. Preparation and Characterization of Lanthanum Lead Cobalt Titanium oide La1-xPbx Co1-x TixO3 (0< x < 1). Om Parkash, Ch. Durga Prasad and Devendra Kumar J. Solid State Chemistry, 69, 385 (1987).

22. Enhanced Ionic conductivity in the B203-Li2 O-LiCl Glasses Containing ZrO2 Dispersion.
Devendra Kumar, Om Parkash and Anju Gupta J. Mats. Sci. Letts.6, 729 (1987).

23. Effect of Dispersion of Metallic Tin and Silicon Carbide on the Ionic Conductivity of B2 O3-Li2 O-LiCl Glasses.Om Parkash, Devendra Kumar and AnJu GuptaMats. Res. Bull., 22, 623 (1987).

24. Electrical properties of the System Lanthanum Lead Cobalt Titanium Oxide.
Devendra Kumar, Om Parkash and Ch. Durga PrasadBull. Mats. Sci.,9, 123 (1987).

25. Dielectric Behaviour of Glasses and Glass Ceramics in the System
PbO-BaO-TiO2-B2 O3-SiO2 . R.K. Mandal, Ch. Durga prasad, Om Parkash and Devendra Kumar
Bull. Mats. Sci., 9, 255 (1987).

26. Dielectric Properties of Lanthanum Lead Cobalt Titanium Oxide (Lal-xPbx) (Co1-x Tix)O3.
Om Parkash, Ch. Durga Prasad and Devendra Kumar Phys. Stat. Sol. (a), 106, 627 (1988).

27. Defect Structure and Electrical properties of Magnesium Substituted Strontium Titanate.
Om Parkash, Ch. Durga Prasad and Devendra Kumar J. Solid State Chemistry, 74, 369 (1988).

28. Preparation and Structure of the SystemLa1-xNaxCo1-x-NbxO3 (0.01 < < 0.99). Om Parkash, Rablndra Kumar, Devendra Kumar and D. Bahadur J. Mats. Sci. Letts., 7, 383 (1988).

29. Electrical Conduction in the Solid Solution La1-xNaCo1-xNbxO3 (0.01 < < 0.99). Om Parkash, Devendra Kumar and Rabindra Kumar Bull. Mats. Sci., .10., 245 (1988).

30. Electrical Properties of Lal-xPbxCo1-xTiO3 (=0.05 & 0.10) Ch. Durga Prasad, Om Parkash and Devendra Kumar J. Mats. Sci. Letts., 7, 789 (1988).

31. Characterization of Lanthanum Cobalt Magnesium Oxide Prepared by Co precipitation Method.
Om Parkash, Rabindra Kumar, Ch.D. Prasad and Devendra KumarJ. Phys. D.: Appl. Phys. 21, 1512 (1988).

32. Preparation and Structure of the System (Ca1-x Y) ( Ti1-xCo)O3. H.S. Tewarl, Om Parkash, V.B. Tare and Devendra Kumar J. Mats. Sci. Letts. 8, 652 (1988).

33. Preparation and Characterization of Ca1-xLaTi1-xCoO3 (0.00 < < 0.50) System. Om Parkash, Ch. Durga Prasad and Devendra Kumar Bull. Mats. Sci. 11, 39 (1988).

34. Preparation and Characterization of the System Ba1-xLaTi1-xCoxO3 (0.00 < x < 0.50).
Om Parkash, ,Ch. Durga Prasad and Devendra Kumar J. Mats. Sci. Letts. 8, 475 (1989).

35. Preparation, Structure and Dielectric Properties of the System Bal-xLaxTi1-xNixO3. ,
Om Parkash, H. S. Tewari, L. Pandey, Rablndra Kumar and Devendra Kumar J. Am. Ceram. Soc. ,72, 1520 (1989).

36. Electrical Conduction in the System Ca1-xLaxTi1-xCoxO3. Devendra Kumar, Ch. Durga Prasad, H.S.Tewari and Om Parkash J. Phys. D.: Appl. Phys. 23, 342 (1990).

37. Electrical Conductivity Behaviour of the Solid Solution Ba1-xLaxTi1-xCoxO3.
Devendra Kumar, Ch. Durga Prasad and Om Parkash J. Phys. Chern. Solids 21, 73 (1990).

38. Dielectric and Microstructural Behaviour of BaTiO3 sintered in the presence of Crystallizable Glass. Devendra Kumar, P.K. Sakharker, Om Parkash and L. Pandey J. Mats. Sci. Letts.,8, 652 (1989).

39. Dielectric Properties of the System Ca1-xTi1-xCoxO3 (0.00< x < 0.15). H.S. Tewari, Om Parkash, V.B. Tare and Devendra Kumar J. Mater. Sci. ,25, 2181 (19,90).

40. Dielectric Relaxor Behaviour of the System Sr1-xLaxTi1-xCoxOx (x < 0.40). Om Parkash, ch. Durga Prasad and Devendra Kumar J. Mats. Sci. 22, 487 (1990).

41. Dielectric Properties of the System Ca1-xLaxTi1-xCoxO3. Ch. Durga Prasad, H. S. Tewari, D. Kumar and Om Parkash Bull. Mats. Sci., 11 307 (1988).

42. Radiation Enhanced Sintering of Ceramics at Low Temperatures H. Jain, Om Parkash and M. Y. X u J. Am. Ceram. Soc.72, 2176 (1989).

43. Preparation, Structure and Dielectric Properties of the System Sr1-x Lax Til-x NixO3
Om Parkash., L.Pandey, Mukesh Kumar Sharma and Devendra Kumar J. Mats. Sci. 24, 4505 (1989).

44. Preparation and Characterization of the System Srl-xLaxTil-xCo03. Om Parkash, Ch. Durga Prasad and Devendra Kumar Phys. Stat. Sol(a), 116, K81 (1989).

45. Studies on Spin State Equilibrium of Cobalt Ions in the System Lal-xNaxCol-xNbx03 ( x< 0.40) Using Magnetic Susceptibility Measurements. Om Parkash, M. Tiwari, N. Chaturvedi and Devendra Kumar Bull. Mats. Sci.12 53 (1989).

46. Dielectric Relaxor Behaviour of SrO.8LaO.2Tio.8CoO.203. Om Parkash, Lakshman Pandey, H.S. Tewarl, V.B. Tare and Devendra Kumar Ferroelectrics, 102, 203 (1990).

47. Dielectric Behaviour of the System Bal-xLaxTil-xCoxO3.OmParkash, Ch. Durga Prasad and Devendra Kumar J. Mater. Sci. 26, 6063 (1991).

48. Investigations of the Cuprate Superconductors Prepared by the Combustion route. R. Mahesh, Vikram A. Pavate, Om Parkash and C. N. R. Rao Superconductor. Sci. Technol. 5 , 174 (1992).
49 PreparationandCharacterizationofSrO.9TbO.lTiO.9CoO.103. OmParkash, H. S. Tewari and Plng peng J. Mater. Sci. Letts. 11, 430 (1992).

50. Study of Electrical Conduction Behaviour of the System Lal-xNaxCol-x Nb xO3 ( x< 0.50). Om Parkash, L. Pandey, H. S. Tewari, V. B. Tare and D. Kumar J. Am. Ceram. Soc. 75 (11), 3141 (1992).

51. Preparation and Characterization of the system Bal-xLaxTil-xCux03 ( x< 0.50). Om Parkash, H.S. Tewari,C.D. Prasad and D.K. Agrawal J. Mater. Sci. Letts. 11 , 684 (1991).

52. Study on Electrical Conduction behaviour of the system Bal-xLaxTil-xNix03.
Om Parkash, H.S. Tewari, V.B. Tare and D. Kumar J. Alloys and Compounds 190, 243 (1993).

53. Electrical Conduction in Calcium Yttrium Titanium Cobalt Oxide Cal-xYx Til-x Cox03 ( x< 0.15). Om Parkash, H.S. Tewarl, V.B. Tare and D. Kumar J. Phys. D: Appl. Phys. 26, 676 (1993).

54. Preparation and Structure of Compounds in the system Sr1-xLaSn1-xCoO3. K.D. MandaI, Om Parkash, C.C. Christopher, M.S. Sastry and Devendra Kumar Cryst. Res. Technol. 28, K 27 (1993).

55. Dielectric Behaviour of Glass-Ceramics in the system (SrO-TiO2)-(SiO2-B203) - Bi203. O.P. Thakur, Om Parkash, L. Pandey and Devendra Kumar Proc.Nat. Symp. on Hi. Tech. Ceramics (1993) 70, Varanasi.

56. Electrical Conduction Behaviour of Sr1-xLaxTi1-xCoxO3 (x<. 0.40) System. Om Parkash, Ch. Durga Prasad and Devendra Kumar J. Phys. D: Appl. Phys 27, 1509 (1994).

57. Study of Electrical Conduction Behaviour of Sr1-xLaxTi1-xNixO3 by ImpedanceSpectroscopy. OmParkash, L.Pandeyand DevendraKumar J. Alloys and Compounds,206 147 (1994).

58. Study of Electrical Conduction Behaviour of Lanthanum and Cobalt doped Strontium Stannate. Om Parkash, K.D. MandaI, C.C. Christopher, M.S. Sastry and Devendra Kumar . Bull. of Mats. Sci., 17 253 (1994).

59. Preparation and Characterization of Strontium Stannate. Om Parkash, K.D. MandaI, C.C. Christopher, M.S. Sastry and Devendra Kumar J. Materials Sci. Letters 13, 1616 (1994).

60. Effect of K20 addition on Crystallization and Microstructural Behaviour of Strontium Titanate BorosilicateGlass Ceramic System. O.P. Thakur, Devendra Kumar,Om Parkash and L. Pandey
Materials Letters 23, 253 (1995).

61. Equivalent Circuit models for Electronic Ceramics. Lakshman Pandey,Om Parkash, R.K. Katare and Devendra Kumar.Bull. of Mater. Sci. 18, 563 (1995).

62. Dielectric and Microstructural Behaviour of Strontium Titanate Borosilicate Glass Ceramic Systems. O.P. Thakur, Devendra Kumar, Om Parkash and Lakshman Pandey Bull. Mater. Sci. 18, 577 (1995).

63. Synthesis, Structure and Electrical Conduction Behaviour of the Cal-xLaxSn1-xCoxO3 System.
Om Parkash, K.D. MandaI and M.S. Sastry J.Alloy and Compo. 228, 177 (1995).

64. Preparation and Characterisation of CaSn03. Om Parkash, K.D.Mandal and M.S.Sastry.
J. Materials Sci. Letters 14, 1412 (1995).

65. On the Sample Holder Correction in the Complex Impedance Analysis of Electro Ceramics
Lakshman Pandey,Om Parkash and Devendra Kumar. Ind. J. Pure & Appl. Phys. 34, 28 (1996).

66. Effect of 1 wt% CoO addition on Dielectric and Microstructural Behaviour of (SrO-Ti02) - (2Si02.B203) Glass and Glass Ceramics. O.P. Thakur, Devendra Kumar, Om Parkash and Lakshman Pandey Bull. Mater. Sci. 19, 393 (1996).

67. Effect of Compositional Variation on Dielectric and Electrical properties of Sr1-xLaxTi1-xCox03 system. Bull of Mater. Sci. 19, 513 (1996).

68. Dielectric Behaviour of Sr1-x LaxSn1-x Cox03. Om Parkash, K.D.Mandal, C.C.Crishtoper, M.S Sastry and Devendra Kumar J. Materials Sci. 31, 4705 (1996).

69. Effect of Processing Route and Parameters on the Dielectric properties of the Valence Compensated Composition Sr0. 65La0. 35Ti0. 65Co0. 35O3.

R. K. Dwivedi, Om Parkash, C. C. Christopher and D. Kumar J. Mater. Sci. Letters. 15, 1865 (1996).
70. Crystallisation and Microstructural Behaviour of StrontiumTitanate Borosilicate Glass Ceramics With Bi203 Addition. O.P.Thakur, D.Kumar, Om Parkash and L.Pandey Bull. of Mater. Sci. .20, 67 (1997).

71. Dielectric Behaviour of Strontium Titanate Glass Ceramics With Bismuth Oxide Additions Nucleating Agent. O.P.Thakur, D.Kumar, OmParkash and L.Pandey Indian J. of Phys. 71 A, 161 (1997).

72. Preparation and Characterization of BaSn03 Shail Upadhyay, Om Parkash and Devendra Kumar
J. Mats. Sci. Letts. 16, 1330 (1997).

73. Tape Casting and its Characterization for Sr0. 65La0. 35Ti0. 65Co0. 35O3. Devendra Kumar, .Shail.Upadhyay and Om Parkash J. Mater. Sci. Letts. 32 151 (1997) 74. Preparation and Structure of Na1-xLaxNbl-2x/3Co2x/303 with x= 0.4275, 0.435, 0.50 and 0.51. Ashok K. Sahu, Om Parkash, and Devendra KumarJ. Mater. Sci. Letts. 16 971 (1997)

75. Evidence of Two Ferroelectric PTCR Components in Valence Compensated Ceramic System Ba1-xLaxTi1-xCoxO3. L.Pandey, R.K.Katare, Om Parkash and D.Kumar Bull. of Mats. Sci. 20, 933 (1997)

76. On the Complex Impedance Analysis of Electronic Ceramics Showing Steeply Rising impedance Pattern at Low Frequencies. L.Pandey, R.K.Katare, D.Kumar and Om Parkash Indian J. of Pure and Applied Physics 36 (1998)

77. Probing Electrical Conduction Behaviour of BaSnO3. Shail Upadhyay, Ashok Kumar Sahu, Devendra Kumar and Om Parkash J. Appl. Phys., 84, 828 (1998)

78. A Detailed Investigation of the Relaxor Like Behaviour of Sr1-xLaxTil-xCoxO3 (0.20 < x < 0.40). Shail Upadhyay, Devendra Kumar and Om Parkash Trans. Ind. Ceram. Soc. 56, 96 (1997)

79. A Novel Technique for Measurement of Magnetic Permeability of Ceramics. R.K.Katare, L.Pandey, R.K.Dwivedi, Om Parkash and D.Kumar Indian J. Mat. Sci. & Engg., 6, 34 (1999)

80. Dielectric Properties of the System Ca1-xLaxSn1-xCoxO3 K.D. MandaI, M.S. Sastry and Om Parkash Ind. J. Pure and Appl. Phy. (Communicated)

81. Synthesis, Structure and Dielectric Behaviour of the System Ba1-xLaxTi1-xCrxO3.
R.K.Dwivedi, K.D. MandaI, Devendra Kumar and Om Parkash Ind. J. Pure and Appl. Phys. (Communicated)

82. Effect of Processing Route on Dielectric Behaviour of Valence Compensated Sr0.50Ca0.15LaO.35 Tio.65 Co 0.35 O3 Ceramics R. K. Dwivedi, Devendra Kumar, Om Parkash and Lakshman Pandey Ceramic International, 26, 13 (2000)

83. Electrical conduction behaviour of cobalt doped BaSnO3 Om Parkash, D. Kumar, K. K. Srivastava and R.K. Dwivedi,J. Mater. Sci., 36, 5805 (2000)

84. Dielectric behaviour of valence compensated system Ba1-xLaxSn1-xNixO3
Shail Upadhyay, Devendra Kumar and Om Parkash, Brit. Ceram. Trans., 99, 225 (2000)
85. Dielectric relaxation in valence compensated solid solution Sr0.65La0.35Ti0.65Co0.35O3
R. K. Dwivedi, Devendra Kumar and Om Parkash J. Phys. D : Appl. Phys., 33, 88 (2000)

86. Valence compensated perovskite oxide system Ca1-xLaxTi1-xCrxO3
Part I : Structure and dielectric behaviour R. K. Dwivedi, D. Kumar and Om Parkash J. Mater. Sci., 36, 3641 (2001)

87. Valence compensated perovskite oxide system Ca1-xLaxTi1-xCrxO3
Part II : Electric transport behaviour R. K. Dwivedi, D. Kumar and Om Parkash J. Mater. Sci., 36, 3649 (2001)

88. Valence compensated perovskite oxide system Ca1-xLaxTi1-xCrxO3
Part III : Impedance Spectroscopy R. K. Dwivedi, D. Kumar and Om Parkash
J. Mater. Sci., 36, 3657 (2001)

89. Dielectric relaxation and conduction in the system Ba1-xLaxSn1-xCrxO3
Shail Upadhyay, Om Parkash and Devendra Kumar J. Mater. Sci., 12, 165 (2001)

90. Structure and dielectric behaviour of valence compensated perovskite oxide
Sr1-xLaxTi1-xCrxO3 ceramics R. K. Dwivedi, D. Kumar and Om Parkash
Brit. Ceram. Trans., 100, 115 (2001)

91. Synthesis and electrical conduction behaviour of strontium yttrium titanium cobalt oxide (Sr1-xYxTi1-xCoxO3, 0.01 £ x £ 0.10) C. R. Gautam, R. K. Dwivedi, D. Kumar and Om Parkash
Mater. Letts., 50, 254 (2001)

92. Solubility of lanthanum, nickel and chromium in barium stannate
Shail Upadhyay, Om Parkash and Devendra Kumar Mater. Letts., 49, 251 (2001)

93. Solid Polymer Electrolytes: Interpenetrating Polymer Networks Doped with Lithium Perchlorate
Pratyay Basak, Om Parkash and P.R. Chatterji J. Macromol. Sci. Pure Appl. Chem., A38(4), 399, (2001)

94. Crystallization, microstructure development and dielectric behaviour of glass ceramics in the system [SrO.TiO2] - [2SiO2.B2O3] - La2O3 O. P. Thakur, D. Kumar, Om Parkash and L. Pandey
J. Mater. Sci., 37, 2597 (2002)

95. Influence of Nb2O5 addition on crystallization, microstructure development and dielectric behaviour of strontium titanate borosilicate glass ceramic system O. P. Thakur, D. Kumar, Om Parkash and L. Pandey Ind. J. Phys., 76A, 435 (2002)

96. Effect of cobalt oxide addition on the crystallization behaviour of [SrO.TiO2] - [2SiO2.B2O3] glass ceramic system O. P. Thakur, D. Kumar, Om Parkash and L. Pandey J. Ceram. Processing Research, 3 , 253 (2002)

97. Dielectric and impedance spectroscopic behaviour of alkali oxide containing glass ceramics in the system [SrO.TiO2] - [2SiO2.B2O3] O. P. Thakur, D. Kumar, Om Parkash and L. pandey
J. Ceram. Processing Research 3, 253 (2002)

98. In-commensurate Crystal Growth Behaviour in strontium Titanate Glass Ceramic System
O. P. Thakur, D. Kumar, Om Parkash and L. Pandey Modern Phys. Letts., B, 16, 1037 (2002)

99. Electrical characterization of strontium titanate borosilicate ceramics system with bismuth oxide addition using immittance spectroscopyMaterils Chem. O. P. Thakur, D. Kumar, Om Parkash and L. Pandey Phys., 78, 751 (2003)

100. Equivalent Circuit Model of Ca1-xYxTi1-xCoxO3 Using Impendance pectroscopy
K. Katare, L. Pandey, O.P. Thakur, O. Parkash and D. Kumar Modern Phys. Letts., B, 17, 339 (2003)

101. Crystallization of Lead-Strontium Titanate Perovskite Phase in [(Pb1-xSrx)O.TiO2] - [2SiO2.B2O3] - [K2O] Glass Ceramics A.K. Sahu, D. Kumar and Om Parkash
Brit. Ceram. Trans. 102, 139 (2003)

102. Dielectric Properties of Glass Ceramics in the System[(Pb1-xSrx)O.TiO2)] - [2SiO2.B2O3] - [K2O] A.K. Sahu, D. Kumar, Om Parkash, O.P. Thakur and Chandra Prakash
Brit. Ceram. Trans. 102, 148 (2003)

103. Effect of Phosphours Addition on the Sintering and Dielectric Properties of
Pb(Zr0.52Ti).48O3 A.K. Saha, D. Kumar, O. Parkash, A. Sen and H.S.Maiti
Mater. Res. Bull. 38, 1165 (2003)

104. Preparation Structure and Dielectric Behaviour of the System
Sr1-xLaxTi1-xFexO3 (x < 0.50) O. Parkash, D. Kumar, C.C. Christopher
Proc. Indian Acad. Sci. (Chem. Sci.) 115, 649 (2003)

105. Effect of K2O/BaO ratio on Crystallization, Microstructure and Dielectric Properties of Strontium Titanate Borosilicate Glass Ceramics A.K. Sahu, D. Kumar, Om Parkash, O.P. Thakur and Chandra Prakash Ceram. Int.(In Press)

106. Dielectric Behaviour of Lead Strontium Titanate Glass Ceramics Doped with La2O3
C.R. Gautam, A.K. Sahu, O. Parkash and D. Kumar Proc. RAIM 2002 (in Press)

107. Synthesis and Characterization of Ba(Co1/2 Nb1/2) O3 Prepared by Solid State Ceramic Route and Combustion Method Pragyan Mohanty, Prakash Singh, A.K. Sahu, D. Kumar and Om Parkash Proc. RAIM 2002 (in Press)

108. Study of electrical conduction behaviour of lanthanum doped barium stannate
Ba1-xLaxSnO3 Shail Upadhyay, Om Parkash and Devendra Kumar Proc. RAIM 2002 (in Press)

109. Study of Grain and Grain Boundary Resistances in The Ceramic System Ca0.7La0.3MnO3 using Impedance Spectroscopy Vinod Kumar, O.P.Thakur, Lakshman Pandey, Om Parkash, Devendra Kumar, Chandra Prakash, I.Oliviera and A.P. Guimaraes Proc. RAIM 2002 (in Press)

110. Preparation structure and dielectric behaviour of the system Sr1-xLaxTi1-xFexO3 ( x< 0.50 )
Om Parkash, Devendra Kumar and CC Christopher Proc. Indian Acad. Sci. (Chem. Sci) Volume 115, , Oct.-Dec. (2003) 649

111. Crystallographic phase, phase transitions, and barrier layer formation in
(1-x) [ Pb(Fe1/2Nb1/2)O3]-xPbTiO3 Satendra Pal Singh, Akhilesh Kumar Singh, Dhananjai Pandey, H. Sharma and Om Parkash J. Mater. Res., 18, (2003)

112. Effect of Annealing and Quenching on the Dielectric Behaviour of the Valance Compensated Solid Solution (Sr1-xYxTi1-xCox, 0.01 < x < 0.10)C.R. Gautam*, Om Parkash, Devendra Kumar, A.K. Sahu and Prakash Singh
Procd. of Journal of Ferroelectric (In Press)