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Physical Review Letters 8 April 2005 Phys. Rev. Lett. 94, 137210 (2005)

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Body-Centered-Cubic Ni and Its Magnetic Properties

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. Jiang,¹ F. Q. Liu,¹ H. J. Qian,¹ K. Sun,² L. M. Wang,² G. Rossi,³ Z. Q. Qiu,⁴ 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±0.08µ_B/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/abstract/PRL/v94/e137210
doi:10.1103/PhysRevLett.94.137210
PACS: 75.30.-m, 81.20.-n        Additional Information

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