Magnetic and Magneto-optical properties of Heusler alloys of the type Ni3-xMnxSn |
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Authors: | K H J Buschow P G van Engen D B de Mooij |
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Institution: | Philips Research Laboratories, 5600 JA, Eindhoven, The Netherlands |
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Abstract: | The crystallographic, magnetic and magneto-optical properties of Heusler compounds of the type Ni3-xMnxSn were investigated. The thermal expansion behaviour of a limited number of these compounds was also studied. The cubic L21 structure was found to exist in the range 0.6 x 2.2. With increasing x the saturation moment first increases, then decreases again. The main peak in the Kerr rotation spectra measured in the energy range 0.5-4.5 eV shows a similar trend. The Curie temperature and the lattice constant increase with x, both quantities showing a discontinuity near x = 1. All these features are discussed in terms of relative site occupancies of the Mn atoms at the tetrahedral and octahedral sites in the L21 structure. |
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