Magnetic Properties and Kerr Effects in PtMnSb Thin Films
Dependence of magnetic properties and Kerr effects in PtMnSb thin films on oxygen partial pressure during annealing was investigated. The coercivity H c⊥ increased with oxygen partial pressure, while the change in H c″ was relatively small. The saturation magnetization M s was almost constant up to...
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Published in | IEEE translation journal on magnetics in Japan Vol. 5; no. 11; pp. 1016 - 1022 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
IEEE
01.11.1990
Institute of Electrical and Electronics Engineers |
Subjects | |
Online Access | Get full text |
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Summary: | Dependence of magnetic properties and Kerr effects in PtMnSb thin films on oxygen partial pressure during annealing was investigated. The coercivity H c⊥ increased with oxygen partial pressure, while the change in H c″ was relatively small. The saturation magnetization M s was almost constant up to 6 × 10 -4 Torr, and then decreased rapidly at higher O 2 pressures. The Kerr rotation angle in zero magnetic field θ K(0) and the squareness ratio R s of Kerr loops took on maximum values at or near 8 × 10 -4 Torr of 0.85° and 0.45 respectively. SEM observations and X-ray diffraction studies revealed that these values are related to the preferential oxidation at PtMnSb columnar boundaries. The oxidation may shorten the size of columns and isolate them from each other. |
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ISSN: | 0882-4959 2375-0545 |
DOI: | 10.1109/TJMJ.1990.4564390 |