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The properties of exchange-coupled triads of Cr 3+ ions in ruby

1971; IOP Publishing; Volume: 4; Issue: 15 Linguagem: Inglês

10.1088/0022-3719/4/15/020

1747-3802

C A Bates, R F Jasper,

Magnetic properties of thin films

The eigenstates and eigenvalues for a triad consisting of three exchange-coupled Cr3+ ions in ruby are derived from a phenomenological spin Hamiltonian. The terms included in the Hamiltonian are the isotropic, anisotropic and antisymmetric exchange interactions together with the single ion zero field term and dipole-dipole interaction term. The importance of each term is discussed in relation to various possible triads in ruby.