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1969•Journal of Physics E Scientific InstrumentsOpen access

A sensitive apparatus for the measurement of induced magneto-crystalline anisotropy

J E Knowles

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Abstract

Using single crystal spheres of less than 1·5 mm diameter changes of anisotropy field of the order of 0·1 Oe may be determined; hence the induced anisotropy constants F and G. If necessary the measurement may be made in the presence of the very large anisotropy fields associated with the ordinary, typically cubic, magnetocrystalline anisotropy. Changes of about 0·01 Oe may be detected and the apparatus is stable to this degree over periods of some hours.

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Using single crystal spheres of less than 1·5 mm diameter changes of anisotropy field of the order of 0·1 Oe may be determined; hence the induced anisotropy constants F and G. If necessary the measurement may be made in the presence of the very large anisotropy fields associated with the ordinary, typically cubic, magnetocrystalline anisotropy. Changes of about 0·01 Oe may be detected and the apparatus is stable to this degree over periods of some hours.

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Available abstract

Using single crystal spheres of less than 1·5 mm diameter changes of anisotropy field of the order of 0·1 Oe may be determined; hence the induced anisotropy constants F and G. If necessary the measurement may be made in the presence of the very large anisotropy fields associated with the ordinary, typically cubic, magnetocrystalline anisotropy. Changes of about 0·01 Oe may be detected and the apparatus is stable to this degree over periods of some hours.

Key concepts: Magnetocrystalline anisotropy, Anisotropy, Condensed matter physics, Materials science, Field (mathematics), Magnetic anisotropy, Crystal (programming language), SPHERES

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