Ground and Applied-Field-Driven Magnetic States of Antiferromagnets

Abstract

As discussed in this chapter, we develop a mean-field mathematical method to calculate the ground states of antiferromagnets and better understand the applied magnetic-field induced exotic properties. Within antiferromagnetic materials competitive and cooperative interactions exist leading to substance extraordinary magnetic states. Our calculations predict that applying a magnetic field to antiferromagnets can switch it from one magnetic state to another. These include antiferromagnetic ground state, spin-flop transition, spin-flopped state, spin-flip transition and spin-flipped state. Our framework successfully demonstrates these phase changes. With this, a map of all equilibrium magnetic ground states, as well as the respective equilibrium phase conditions, are derived. Our study provides insight into the origins of the various magnetic states.

arXiv commentVolume 300, Chapter 4, 42 pages 81-122; Publisher: Nova Science Publishers, Inc.; https://novapublishers.com/shop/horizons-in-world-physics-volume-300/?

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