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Effect of GeV-Ion irradiation on magnetic properties of Fe–Ni invar alloys |
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| Authors: | F. Ono S. Komatsu Y. Chimi N. Ishikawa A. Iwase T. Kambara |
| Affiliation: | aDepartment of Physics, Okayama University, 2-1-1 Tsushima-Naka, Okayama 700-8530, Japan bDepartment of Materials Science, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan cResearch Institute for Advanced Science and Technology, Osaka Prefecture University, Sakai, Osaka 599-8570, Japan dAtomic Physics Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan |
| Abstract: | High-energy ion irradiation was performed using a ring-cyclotron installed at the Institute of Physical and Chemical Research (RIKEN). The incident ions were Ta with the energy of 3.71 GeV, and the fluence was fixed to 5 × 1012 ions/cm2. As a target, three sheets of square plates of Fe–30.2 at.% Ni invar alloys were put one upon another. The shift of the Curie temperature TC of the first sample was 14 K, while that of the second one was 22 K. Comparing these two, the shift was as large as 46 K in the last sample in which ions stopped in the middle. It was concluded that there are at least two different mechanisms that contribute to the shift of TC. |
| Keywords: | Fe–Ni invar alloy Magnetic properties GeV heavy ions |
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