Effect of Mechanical Stress on Structure of Magnetization of Three-Layer Nanosized Disks
| Autor: | V. S. Prokopenko, I. N. Orlova, R. Yu. Rudenko, V. A. Orlov |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Lateral surface Condensed matter physics engineering.material Condensed Matter Physics 01 natural sciences Thermal expansion Surface energy Condensed Matter::Materials Science Magnetization Magnetic anisotropy Coating Ferromagnetism 0103 physical sciences Materials Chemistry engineering Condensed Matter::Strongly Correlated Electrons 010306 general physics Anisotropy |
| Zdroj: | Physics of Metals and Metallography. 121:1039-1044 |
| ISSN: | 1555-6190 0031-918X |
| Popis: | The contribution of magnetoelastic effects to the effective magnetic anisotropy of a three-layer film nanodisk (nonmagnetic metal/ferromagnet/nonmagnetic metal) was studied. The mechanical stresses at the lateral surface of the disk that are caused by two factors, i.e., unequal thermal expansion of layers and excess surface energy at the layers interfaces, were estimated. The case in which the contribution of magnetoelastic effects to the anisotropy is comparable with those of shape and crystalline anisotropies was discussed. It was shown that the main reason for the change in the local anisotropy field in the vicinity of a nanodisk edge was the mechanical stresses induced by the excess surface energy. The possible application of film nanodisks of nickel with a bilateral golden coating as “nanolancets” for noninvasive cell surgery of tumors was discussed. |
| Databáze: | OpenAIRE |
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