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  1. No Access

    Article

    Preparation of high-T c superconducting ceramic/polymer composites using gamma radiation

    Abstracts are not published in this journal

    M. S. PANAJKAR, G. M. PHATAK, K. GANGADHARAN… in Journal of Materials Science Letters (1997)

  2. No Access

    Article

    Evidence for superconductivity in fluorinated La2CuO4 at 35 K: Microwave investigations

    In the fluorinated La2CuO4−x prepared using a solid state reaction with NH4HF2 as a fluorinating agent at 550 K at ambient pressure, superconductivity was detected by microwave and EPR te...

    G M Phatak, K Gangadharan, R M Kadam, M D Sastry, U R K Rao in Pramana (1996)

  3. No Access

    Article

    Luminescence properties of Ti-doped gem-grade zirconia powders

    A detailed investigation on luminescence properties of gem-grade zirconia (NFC) as a function of Ti do** is presented. The effect of various parameters such as Ti concentration, environment of heat treatment...

    G M Phatak, K Gangadharan, H Pal, J P Mittal in Bulletin of Materials Science (1994)

  4. No Access

    Article

    Doppler-broadened positron annihilation studies in Y-Ba-Cu-O, Tl-Ca-Ba-Cu-O and Bi-Ca-Sr-Cu-O superconductors

    Doppler-broadened annihilation radiation spectra have been measured as a function of temperature from 77 K to 300 K, for several high temperature oxide superconductors viz single-phase YBCO, single- and mixed-...

    P K Pujari, T Datta, Satya Prakash, S B Manohar… in Bulletin of Materials Science (1991)

  5. No Access

    Article

    Inelastic neutron scattering from Tl2CaBa2Cu2O8

    Coherent inelastic neutron scattering measurements have been carried out on the high temperature superconductors Tl2CaBa2Cu2O8 (Tl-2122,T c =107 K) and Y...

    S L Chaplot, B A Dasannacharya, R Mukhopadhyay, K R Rao… in Bulletin of Materials Science (1991)

  6. No Access

    Article

    Synthesis of single phase Tl-2223 superconductors: How much thallium do we really need?

    This paper describes the synthesis and microwave absorption studies of single phase Tl-2223 compound, withT c=(129 ± 1) K. The single phase compound has been synthesized using a precursor matrix m...

    G M Phatak, R M Iyer, K Gangadharan, R M Kadam… in Bulletin of Materials Science (1991)

  7. No Access

    Article

    Synthesis and structure of (SbPb)CaBa2Cu2O x )

    R. A. Gunasekaran, G. M. Phatak, M. D. Sastry… in Journal of Materials Science Letters (1991)

  8. No Access

    Article

    High temperature superconductivity in bismuth-alkaline earth-copper-oxygen system

    Electrical resistivity measurements of a series of compounds in the bismuth-alkaline earth-copper-oxygen system have been carried out. Several compositions (BiSrCaCu2O x , BiSrCa...

    I K Gopalakrishnan, P V P S S Sastry, K Gangadharan, J V Yakhmi, G M Phatak… in Pramana (1988)

  9. No Access

    Article

    Separation of rare earths by ion exchange

    Separation of rare earths from monazite source by ion-exchange process is discussed. Optimum conditions for obtaining kilogram quantities of individual rare earths of high purity are reported.

    G S Rao, G M Phatak in Bulletin of Materials Science (1980)

  10. No Access

    Article

    Catalytic effects in reactions of chromium(III) part II: The role of excess ligand buffer in complexation of Cr(III) with some aminopolycarboxylic acids

    The complexation of Cr (III) by EDTA, HEDTA and DCTA is channelled through ion pair formation between Cr (III) and the ambient ligand species. The ion pair further undergoes deprotonation giving rise to hydrox...

    G. M. Phatak, K. V. S. Rama Rao, J. Shankar in Proceedings of the Indian Academy of Scien… (1976)

  11. No Access

    Article

    Rapid chelatometric estimation of chromium, iron and aluminium in chromium + iron and chromium + aluminium mixtures

    A study of the kinetics of the reaction of chromium(III) with EDTA [1,2] had shown that the rate of reaction, usually slow, can be accelerated in the presence of hydrogen carbonate, sulphite, nitrite and organ...

    G. M. Phatak, T. R. Bhat in Fresenius' Zeitschrift für analytische Chemie (1968)