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Piezomagnetism is a phenomenon observed in some antiferromagnetic crystals. It is characterised by a linear coupling between the system's magnetic polarisation and mechanical strain. In a piezomagnetic, one may induce a spontaneous magnetic moment by applying physical stress, or a physical deformation by applying a magnetic field.

Piezomagnetism differs from the related property of magnetostriction; if an applied magnetic field is reversed in direction, the strain produced changes sense. Additionally, a non-zero piezomagnetic moment can be produced by mechanical strain alone, at zero field - this is not true of magnetostriction. [1]

The piezomagnetic effect is made possible by an absence of certain symmetry elements in a crystal structure; specifically, symmetry under inversion of either space or time forbid the property. [2]

The first experimental observation of piezomagnetism was made in 1960, in the fluorides of cobalt and manganese. [3]


  1. ^ B. D. Cullity (1971), Fundamentals of magnetostriction. Journal of Metals 1, 323.
  2. ^ I. E. Dzialoshinskii (1958), The problem of piezomagnetism. Soviet Phys. JETP 6, 621.
  3. ^ A.S. Borovik-Romanov (1960), Piezomagnetism in the antiferromagnetic fluorides of cobalt and manganese. Soviet Phys. JETP 11, 786.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Piezomagnetism". A list of authors is available in Wikipedia.
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