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Magnetic hyperfine fields acting on tin in the Heusler alloys Ni2MnxY1−xSn (Y = Ti, V; x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) are investigated by 119Sn-Móssbauer spectroscopy. Hyperfine fields are measured close to the saturation temperatures for all of the samples, while a detailed temperature study is carried out for Ni2MnSn and Ni2Mn0.2V0.8Sn. A phenomenological cluster model is proposed to explain the experimental data obtained in the magnetic region for Ni2Mn0.2V0.8Sn. Strong evidence for short range Mn–Mn magnetic interaction is obtained.
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Birchall et al. (1980) studied this question.
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