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Phys. Rev. Lett. 94, 137210 (2005) [4 pages]

Body-Centered-Cubic Ni and Its Magnetic Properties

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C. S. Tian, D. Qian, D. Wu, R. H. He, Y. Z. Wu, W. X. Tang, L. F. Yin, Y. S. Shi, G. S. Dong, and X. F. Jin*
Surface Physics Laboratory, Fudan University, Shanghai 200433, China

X. M. Jiang1, F. Q. Liu1, H. J. Qian1, K. Sun2, L. M. Wang2, G. Rossi3, Z. Q. Qiu4, and J. Shi5
1National Synchrotron Radiation Laboratory, Beijing 310027, China
2Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor Michigan 48109, USA
3Laboratorio Nazionale TASC-INFM, Strada Statale 14, km 163.5 Basovizza, I-34012 Trieste, Italy
4Department of Physics, University of California, Berkeley, California 94720, USA
5Department of Physics, University of Utah, Salt Lake City, Utah 84112, USA

Received 18 November 2004; published 7 April 2005

The body-centered-cubic (bcc) phase of Ni, which does not exist in nature, has been achieved as a thin film on GaAs(001) at 170 K via molecular beam epitaxy. The bcc Ni is ferromagnetic with a Curie temperature of 456 K and possesses a magnetic moment of 0.52±0.08μB/atom. The cubic magnetocrystalline anisotropy of bcc Ni is determined to be +4.0×105  ergs·cm-3, as opposed to -5.7×104  ergs·cm-3 for the naturally occurring face-centered-cubic (fcc) Ni. This sharp contrast in the magnetic anisotropy is attributed to the different electronic band structures between bcc Ni and fcc Ni, which are determined using angle-resolved photoemission with synchrotron radiation.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.137210
DOI:
10.1103/PhysRevLett.94.137210
PACS:
75.30.–m, 81.20.–n

*Corresponding author.

Electronic address: xfjin@fudan.edu.cn

 
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