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Magnetic State in Iron Hydride Under Pressure Studied by X-ray Magnetic Circular Dichroism at the Fe K-edge
Published online by Cambridge University Press: 01 February 2011
Abstract
In order to study magnetic states in Fe-hydride under pressure, X-ray magnetic circular dichroism (XMCD) at the Fe K-edge has been measured up to 27.5 GPa. As a result, hydrogenation from bcc-Fe to dhcp-FeH occurs within a narrow region of 3.2-3.8 GPa, which is clearly observed by the dichroic profile in dhcp-FeH differing from that in bcc-Fe. Influence of H atoms on Fe 3d and 4p electronic states is discussed using the pressure-dependent XMCD and the first-principles calculation.
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- Copyright © Materials Research Society 2010
References
3
Antonov, V.E., Baier, M., Dorner, B., Fedotov, V.K., Grosse, G., Kolesnikov, A.I., Ponyatovsky, E.G., Schneider, G., and Wagner, F.E., J. Phys.: Cond ondens ens. Matter Matter, 14, 6427 (2002).Google Scholar
4
Antonov, V.E., Belash, I.T., Degtyareva, V.F., Ponyatovskii, E.G., Shiryaev, V.I., Sov. Phys. Dokl.
25, 490 (1980).Google Scholar
6
Choe, I., Ingalls, R., Brown, J.M., Sato-Sorensen, Y., Mills, R., Phys. Rev. B, 44, 1 (1991).Google Scholar
7
Ishimatsu, N., Maruyama, H., Kawamura, N., Suzuki, M., Ohishi, Y., Shimomura, O., J. Phys. himomura, Soc. Jpn., 76
064703, (2007).Google Scholar
8
Ding, Y., Haskel, D., Tseng, Y.C., Kaneshita, E., Veenendaal, M. van, Mitchell, J.F., Sinogeikin, S.V., Prakapenka, V., Mao, H.K., Phys. Rev. Lett.
102, 237201 (2009).Google Scholar
13
Hirano, K. H, Izumi, K., Ishikawa, T., Annaka, S., Kikuta, S., Jpn. J. Appl. Phys.
30, L407 (1991).Google Scholar
15
Hirao, N., Kondo, T., Ohtani, E., Takemura, K., Kikegawa, T., Geo Geophys phys. Res. Lett.
31, L06616 (2004.Google Scholar
17
Sakurai, H., Itoh, F., Maruyama, H., Koizumi, A., Kobayashi, K., Yamazaki, H., Tanji, Y., Kawata, H., J. Phys. Soc. Jpn. Jpn., 62, 459, (1993).Google Scholar
- 4
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