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Magnetic properties of antiphase domain boundaries

2002; Elsevier BV; Volume: 242-245; Linguagem: Inglês

10.1016/s0304-8853(01)01205-7

1873-4766

Lothar Berger, Y. Labaye, J. M. D. Coey,

Magnetic and transport properties of perovskites and related materials

Abstract Antiphase domains in ferromagnetic and ferrimagnetic oxides may be coupled antiparallel by superexchange at the antiphase boundary. Monte Carlo simulations on an array of 1600 vector spins show how these antiferromagnetic defects influence the magnetisation curve; two 90° Bloch walls of opposite chirality on either side of the boundary impede the approach to saturation, and hysteresis is induced by the defect.