Metamagnetic transitions in cubic La(Fe<sub>x</sub>Al<sub>1-x</sub>)<sub>13</sub> intermetallic
T T M Palstra; H G C Werij; G J Nieuwenhuys; J A Mydosh; F R de Boer; K H J Buschow; T T M Palstra; Kamerlingh Ones Lab., Rijks-Univ. Leiden, Leiden, Netherlands; H G C Werij; Kamerlingh Ones Lab., Rijks-Univ. Leiden, Leiden, Netherlands; G J Nieuwenhuys; Kamerlingh Ones Lab., Rijks-Univ. Leiden, Leiden, Netherlands; J A Mydosh; Kamerlingh Ones Lab., Rijks-Univ. Leiden, Leiden, Netherlands; F R de Boer; Kamerlingh Ones Lab., Rijks-Univ. Leiden, Leiden, Netherlands; K H J Buschow; Kamerlingh Ones Lab., Rijks-Univ. Leiden, Leiden, Netherlands
Журнал:
Journal of Physics F: Metal Physics
Дата:
1984-08-01
Аннотация:
Cubic NaZn<sub>13</sub>-type compounds of the form La(Fe<sub>x</sub>Al<sub>1-x</sub>)<sub>13</sub> was stabilised with compositions between LaFe<sub>6</sub>Al<sub>7</sub>. For compositions above LaFe<sub>11.2</sub>Al<sub>1.8</sub> (x=0.861) a low-temperature antiferromagnetic state is present in small external fields. However, upon increasing the field to a few tesla, an exceedingly sharp spin-flip transition with remarkably large hysteresis occurs to the fully saturated ferromagnetic state. The origins of this unusual metamagnetic transition are discussed in terms of the special crystal structure.
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