Journals, Patents, Books/Proceedings, Syposia/Conferences

A metallothermic route for producing capacitor grade Tantalum powder, Y.Purushotham, T.Balaji, Arbind Kumar and T.L.Prakash, Transactions of The Indian Institute of Metals, 55 (2002) 301-305

Preparation of high purity tellurium by zone refining, N.R. Munirathnam, D.S. Prasad, Ch. Sudjeer, A.J. Singh and T.L. Prakash, Bulletin of Materials Science 25(2002)32

Sintering and electrical properties of Tantalum anodes for capacitor applications, T.Balaji, R.Govindaiah, M.K.Sharma, Y.Purushotham, Arbind Kumar and T.L.Prakash, Materials Letters, 56 (2002) 560 – 563

Preparation of high purity tellurium by zone refining, N.R. Munirathnam,
D.S.Prasad, Ch. Sudhher, A.J. Singh and T.L. Prakash, Bulletin of Materials Science,25(2002) 79

Chemical and physical properties of tantalum powder, Y,Purushotham, T. Balajo, Arbind Kumar, R. Govindaiah, M.K. Sharma, V.C. Sethi and T.L. Prakash, Modern Physics Letters B. 15(20) (2001) 861

Chemical and physical properties of Tantalum, Y.Purushotham, T.Balaji, Arbind Kumar, R.Govindaiah, M.K.Sharma, V.C.Sethi and T.L.Prakash, Modern Physics Letters B, 15 (2001) 867-871

Preparation, Characterization and microwave properties of  RETiNbO6 dielectric ceramics
M.T.Sebastian, S. Solomon, R.Ratheesh, J. George and P.Mohanan, J. Ame. Cer. Soc., 84 (7) 1487 (2001)

Whisphering Gallery Mode microwave characterization of Ba5Nb4O15 and BaCe2Ti5O15
Ceramics,     R.Ratheesh, M.T. Sebastian, M.E.Tobar, J. Hartnett and D.G. Blair, Mater. Lett. 45, 279  (2000)

Comparative Raman study of the ordering in Sr(B’0.5 Nb0.5)O3 compound
R.Ratheesh,   M. Woehlecke, B.Berge, Th. Wahlbrink, H. Haeuseler, E.Ruehl & R. Blachnik,  J. Appl.   Phys. 88(5), 2813 (2000)

Whispering Gallery Mode microwave characterisation of Ba(Mg1/3 Ta2/3) O3 Ceramics
R.Ratheesh, M.T.Sebastian, M.E.Tobar, J. Hartnett and D.G. Blair, J. Phys. D, 32, 2821-26  (1999).

Raman spectra of KTP crystal in an in situ electric field
M.J. Bushiri, V.P. Mahadevan Pillai, R. Ratheesh and V.U. Nayar, J. Phys.  Chem. of Solids, 60, 1983 -1988 (1999)

Elastic behaviour of some substituted Sr-Zn W-type hexagonal ferrites, Y.Purushotham and P.V.Reddy, Modern Physics Letters B, 13 (1999) 991 – 998

Elastic behaviour of LiMgZn and LiMgTiZn ferrites, Nitendar Kumar, Y.Purushotham, Pran Kishan and P.V.Reddy, Journal of Magnetism and Magnetic Materials, 192 (1999) 116 – 120

Reduction of OH related Photoluminescence quenching in PI3+  doped GeSe based  glasses by means of purification., B.B. Kale, J. Non-Crystalline Solids, 256-257 (1999) 1-7

Effect of catalyst on the kinetics & reduction of Ce3+ doped by active charcoal” R.S. Sonawane, B.B. Kale, S.K. Apte, M.K. Dongare, Melt and Mater.Trans. B. 30B (1999) 294-298.

The A5B4O15[A=Ba, Sr, Ca, Mg, Zn; B=Nb, Ta] microwave ceramic dielectric resonators
I.N. Jawahar, M.T. Sebastian, Jacob George, P. Mohananan, H. Sreemoolanadhan and R.Ratheesh,. Bull. Electrochemistry, 14(11) 364 (1998)

New High Permittivity and low loss ceramic in the BaO-TiO2-Nb2O5 composition
R.Ratheesh, H. Sreemoolanadhan, M.T.Sebastian and P. Mohanan , J. Mater. Sci.:Materials in  Elect., 9(4) 291 (1998)

Orientation of the magnetic ions in monovalent and divalent doped Sr-Zn W-type hexagonal ferrites, Y.Purushotham and P.V.Reddy, Journal of The Magnetics Society of Japan, 22 (1998) 46-48

Electrical conduction mechanism in LiMgZn and LiMgTiZn ferrites, Nitender Kumar, Pran Kishan, Y.Purushotham, P.V.Reddy and Z.H.Zaidi, Journal of The Magnetics Society of Japan, 22 (1998) 26-28

Electrical and elastic behaviour of In and Al substituted Mg-Mn ferrites, Y.Purushotham, Mahavir Singh, S.P.Sud and P.V.Reddy, International Journal of Modern Physics B, 12 (1998) 2247-2262

Preparation, Characterisation and Dielectric Properties of Ceramics in the BaO-Nd2O3-TiO2  
Systems, R.Ratheesh, H. Sreemoolanadhan, M.T. Sebastian and P. Mohanan, Ferroelectrics,   211, PP1-8 (1997)

The synthesis and characterisation of Hf-substituted (Zr0.8, Sn0.2)TiO4,H. Sreemoolanadhan, R.Ratheesh, M. T. Sebastian and P. Mohanan, J. Phys. D: Appl.Phys., 30, 1809 (1997).

Vibrational analysis of   Ba5-xSrxNb4O15 microwave dielectric ceramic resonators, R. Ratheesh, H. Sreemoolanadhan, and M. T. Sebastian, J. Solid State Chem. 131,2(1997).                                               

Barium Terbium Niobate: A New Ceramic microwave dielectric resonator, H. Sreemoolanadhan, R.Ratheesh, M.T.Sebastian and P. Mohanan, Mater. Lett. 33, 161-165, 1997

       Samarium Titanium Niobate(SmTiNbO₆): A New Microwave Dielectric Ceramic,

       M. T. Sebastian, R. Ratheesh, H. Sreemoolanadhan, Sam Solomon and P.Mohanan, Mater.

       Res. Bull., 32, 1279(1997).

Vibrational Spectra of three Aluminium Selenites Al2(SeO3)3.6H2O, Al2(SeO3)3.3H2O
and   AlH(SeO3)2.3H2O,   R.Ratheesh, G. Suresh, V.U. Nayar and R.E. Morris, Spectrochim Acta 53 A, 1975-1979(1997)

Vibrational analysis of Cu(HSeO3)2.H2O single crystal, R.Ratheesh, G. Suresh, M.J.Bushiri and V. U. Nayar, Spectrochim Acta. A52, 1313(1996)

Infrared  and Polarized Raman spectra of RbAl(SO4)2.12H2O Single crystals, G.Suresh,  R.Ratheesh, T.Pradeep,R.S.Jayasree, V.U.Nayar and G.Keresztury, J. Solid State Chem.,  122, 333-337 (1996).

Mossbauer measurements of amorphous Fe72-xNi10+x-yMoyB16Si2 , A.K. Bhatnagar, B. Seshu, G.V. Sudhakar Rao, N.R. Munirathnam, J. Non-Cryst. Solids, 204 (1996) 305

Vibrational spectra of NH4Sm(SO4)2.4H2O and (NH4)2Ln(SO4)2.4H2O[Ln=Yb,Tm),
G.Suresh, R.Ratheesh, K.Manoj Kumar and V.U.Nayar, J. Solid State Chem.,121, 408-414 (1996)

The influence of spin-reorientation on the dielectric behaviour of cobalt substituted W-type Ba-Zn hexagonal ferrites, V.D.Reddy, Y.Purushotham, M.B.Reddy and P.V.Reddy, Modern Physics Letters B, 10 (1996) 1461-1470

Mossbauer  measurements of amorphous  Fe72-x Ni10+x-y Moy B16 Si2,; A.K. Bhatnagar, B. Seshu, G.V. Sudhakar Rao, N.R. Munirathnam, J. Non-cryst. Solids, 204 PP.305-308 (1996).

Charge transport and conduction mechanism of some substituted strontium W-type hexagonal ferrites, Y.Purushotham and P.V.Reddy, International Journal of Modern Physics B, 10 (1996) 319-336

Elastic behaviour of some substituted Nickel ferrites, K.V.P.Rao, Y.Purushotham and J.S.Chandel, Crystal Research and Technology, 31 (1996) 329-333

Electrical transport properties of some substituted nickel ferrites, Y.Purushotham, J.S.Chandel, S.P.Sud, V.K.Babbar, K.V.Reddy and P.V.Reddy, Materials Science and Engineering B, 34 (1995) 67-73

Elastic behaviour of titanium substituted magnesium ferrites, Y.Purushotham, V.D.Reddy, M.B.Reddy, D.R.Sagar, Pran Kishan and P.V.Reddy, Materials Research Bulletin, 30 (1995) 1015-1022

Ultrasonic investigation of titanium substituted lithium magnesium ferrites, Y.Purushotham, V.D.Reddy, M.B.Reddy, D.R.Sagar, Pran Kishan and P.V.Reddy, Physica Status Solidi (a), 148 (1995) K17-K21

Raman spectroscopic investigations on the phase transitions in Rb₃H(SeO₄)₂  and  Rb₃D(SeO₄)₂   single crystals ,   G.Suresh, R.Ratheesh, V.U.Nayar and M.Ichikawa,Spectrochimica Acta., A52, 465 (1995)

Elastic behaviour of germanium substituted lithium ferrites, Y.Purushotham, P.V.Reddy, Pran Kishan and Nitendar Kumar, Modern Physics Letters B, 9 (1995) 39-44

Spectroscopic investigation of a single crystal K3H(SeO4)2, G.Suresh, R.Ratheesh, V.U.Nayar and M.Ichikawa,Ferroelectrics,  173, 257 (1995).

Electrical transport properties of germanium substituted lithium ferrites, Y.Purushotham, Pran Kishan, Nitendar Kumar and P.V.Reddy, Materials Letters, 22 (1995) 47-54

Design and Development of a Ceramic based biomass gasifier, P.Sasidharan, K.P. Murali and K.Sasidharan,  Journal for international energy initiative, Energy for sustainable development 4 (1995) 49–52

IR and Raman spectra of LaH(SeO3)2 and FeH(SeO3)2
R.Ratheesh, G.Suresh, V.U.Nayar, G. Giester and R.E .Morris,  Indian J. Phys.,  69B(4),307-313, 1995.

Infrared and Polarized Raman spectra of  Cu(HSeO3)2.H2O single  Crystals, R.Ratheesh, G.Suresh, M.J.Bushiri and V.U.Nayar, Spectrochimica Acta , 51A ,1509,1995

Infrared and Polarized Raman spectra of  M₆[TeMo₆O₂₄].7H₂O  [M=K and NH₄] and (NH4)₆[TeMo₆O₂₄].Te(OH)₆.7H₂O single crystals, R.Ratheesh, G.Suresh and V.U.Nayar , J. Solid State Chemistry, 118, 341, 1995.

IR and Polarized Raman spectra of a single crystal; Rb3H(SeO4)2 in the ferroelastic phase, G.Suresh, R.Ratheesh,V.U.Nayar, M.Ichikawa and G.Keresztury,  Spectrochimica Acta, 51A, 3, 1995.

Vibrational Analysis of NaM2(OH)(H2O)(MoO4)2[M= Ni, Zn], R.Ratheesh, G.Suresh and V.U.Nayar , Pramana, 44, 5, 1995.

Vibrational Analysis of Cu(HSeO3)2.H2O Single Crystal at Room and Liquid Nitrogen Temperatures,   R.Ratheesh, G. Suresh, M.J.Bushiri and V.U.Nayaer, Ind. J. Cryog., 20(1), 17(1995)

Compositional aspects on the vapour phase eplitaxial growth of GalnAs layersfrom Ga-In-As-H-C1 Systems, V.N. Mani, Bulletin of Materials Science, 17, 5, (1994) pp 469

Electrical transport properties of some metallic glasses, P.Venugopal Reddy, S.Shekhar and Y.Purushotham, Modern Physics Letters B, 7 (1993) 1295-1299