• Probing exotic magnetic phases in ferrites with neutrons

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    • Keywords


      Neutrons; mixed ferrites; exotic magnetic phases; ferrimagnetic phase; random magnet alloy; insulating spin glass-spinels; site percolation

    • Abstract


      The decades of the sixties and early seventies saw the neutron diffraction technique playing a major role in the elucidation of magnetic structures in a variety of ferrites in our laboratory. In 1979, Villain in his seminal paper on insulating spin glasses argued that the spinel structure affords topological frustration which can give rise to a variety of perturbed magnetic ordering, depending upon magnetic dilution in the ferrite. The neutron is a unique probe to explore the nature of spatial correlations of magnetic moments in such systems. This paper describes the exciting work carried out at Trombay recently in mixed ferrites which have led to the discovery of exotic magnetic phases like the uniaxial random ferrimagnetic phase and the canted random ferrimagnetic phase involving the coexistence of long-range magnetic order and disorder.

    • Author Affiliations


      L Madhav Rao1

      1. Solid State Physics Division, Bhabha Atomic Research Centre, Bombay - 400 085, India
    • Dates

  • Bulletin of Materials Science | News

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