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    • Keywords


      Ferrimagnetic garnets; exchange constants; molecular field constants; transfer integrals; superexchange theory

    • Abstract


      The exchange constants in the ferrimagnetic garnets R3 Fe5 O12 (R=Y3+, Gd3+ and Dy3+) have been obtained from the experimental data on saturation magnetisation and inverse susceptibility. The sign and magnitude of the exchange constants in Y3Fe5O12 have been explained on the basis of Anderson’s theory of superexchange. The low temperature magnetisation data in Dy3Fe5O12 have been explained by assuming canting on thec sublattice.

    • Author Affiliations


      CM Srivastava1 C Srinivasan1 R Aiyar1

      1. Department of Physics, Indian Institute of Technology, Bombay - 400 076, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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