TY - JOUR
T1 - Effects of fluence and fluence rate of proton irradiation upon magnetism in Fe65Ni35 Invar alloy
AU - Matsushita, Masafumi
AU - Wada, Hideki
AU - Matsushima, Yasushi
N1 - Funding Information:
The authors are deeply grateful to Professor Akihiro Iwase of Osaka prefecture University and Professor Fumihisa Ono of Okayama University of Science for useful discussions. Irradiation experiments were conducted at the Tandem Accelerator Complex in Tsukuba University. The authors deeply appreciate the support of Dr. Hiroshi Naramoto for irradiation experiment. The magnetization measurement was conducted at the Institute for Molecular Science under proposals S-13-MS-1068, S-13-MS-1068b, and S-14-MS-1070, supported by the Nanotechnology Platform Program (Molecule and Material Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology, Japan. The authors deeply appreciate the support provided by Dr. Motoyasu Fujiwara for magnetization measurements.
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/7/20
Y1 - 2015/7/20
N2 - Abstract Curie temperature, TC, of the Fe-Ni Invar alloys increase due to irradiation with electron and some kinds of ions. In this study, proton irradiation effects upon magnetism in an Fe65Ni35 alloy have been investigated. It is found that the increment of TC, ΔTC, increases with increasing fluence. The magnetic hysteresis curve of the alloy was found to be unaffected by irradiation. Comparing ΔTC and the calculated energy transfer from the ions to the sample, it seemed that ΔTC was found to be related to the number of vacancies formed in nuclear collision events. In addition, ΔTC was influenced by the fluence rate, i.e., the deposited energy per unit time.
AB - Abstract Curie temperature, TC, of the Fe-Ni Invar alloys increase due to irradiation with electron and some kinds of ions. In this study, proton irradiation effects upon magnetism in an Fe65Ni35 alloy have been investigated. It is found that the increment of TC, ΔTC, increases with increasing fluence. The magnetic hysteresis curve of the alloy was found to be unaffected by irradiation. Comparing ΔTC and the calculated energy transfer from the ions to the sample, it seemed that ΔTC was found to be related to the number of vacancies formed in nuclear collision events. In addition, ΔTC was influenced by the fluence rate, i.e., the deposited energy per unit time.
KW - Curie temperature
KW - Fe-Ni Invar alloy
KW - Ferromagnetic alloy
KW - Irradiation
KW - Magnetization
UR - http://www.scopus.com/inward/record.url?scp=84937198198&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84937198198&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2015.06.050
DO - 10.1016/j.jmmm.2015.06.050
M3 - Article
AN - SCOPUS:84937198198
SN - 0304-8853
VL - 394
SP - 491
EP - 495
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 60323
ER -