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Modification of lattice structure and magnetic properties of Fe-Rh alloys by energetic electron irradiation

Published online by Cambridge University Press:  01 February 2011

Masafumi Fukuzumi
Affiliation:
Graduate School of Engineering, Osaka Prefecture University, 1–1 Gakuencho, Sakai, Osaka 599–8531, Japan
Ryoichi Taniguchi
Affiliation:
Research Institute for Advanced Science and Technology, Osaka Prefecture University, 1–2 Gackuencho, Sakai, Osaka 599–8570, Japan
Seiji Komatsu
Affiliation:
Department of Physics, Okayama University, 2–1–1 Tsushima-Naka, Okayama 700–8530, Japan
Fumihisa Ono
Affiliation:
Department of Physics, Okayama University, 2–1–1 Tsushima-Naka, Okayama 700–8530, Japan
Akihiro Iwase
Affiliation:
Graduate School of Engineering, Osaka Prefecture University, 1–1 Gakuencho, Sakai, Osaka 599–8531, Japan
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Abstract

In order to modify the lattice structure and magnetic properties, we irradiate Fe-50at.%Rh alloys with 8 MeV electrons at room temperature. Effects of irradiation are investigated by using Superconducting QUantum Interference Device (SQUID) and X-Ray Diffractometer (XRD).

Although the crystal structure is not changed by the irradiation and remains the B2 structure, the lattice parameter increases by about 0.1–0.3 % and the antiferromagnetic(AF)-ferromagnetic(FM) transition temperature decreases by 3–18 deg. with increasing the electron fluence. The present result shows that energetic electron irradiation can be used for the precise control of AF-FM transition temperature of Fe-50at.%Rh alloy.

Type
Research Article
Copyright
Copyright © Materials Research Society 2004

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References

[1] Shirane, G. and Chen, C. W., Phys. Rev., 134, A1547 (1963).CrossRefGoogle Scholar
[2] Vinokurova, L. I., Vlasov, A. V., Kulikov, N. I. and Pardavi-Horvath, M., J. Magn. Magn. Mater., 25, 201 (1981).CrossRefGoogle Scholar
[3] Pardavi-Horvath, M., Vinokurova, L. I. and Vlasov, A. V., Inst. Phys., 39, London, 603 (1978).Google Scholar
[4] Fukuzumi, M., Hori, F., Komatsu, M., Kiritani, M. and Oshima, R., Mat. Sci. Forum, 176, 363365 (2001).Google Scholar
[5] Kibata, Y., Hori, F., Oshima, R., Komatsu, M. and Kiritani, M., Mat. Res. Soc. Symp. Proc., 753, 393397 (2003).Google Scholar
[6] de Beergevin, F. and Muldawar, L., Compt.Rend., 252, 1347 (1961).Google Scholar

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