Tian CS, Qian D, Wu D, He RH, Wu YZ, Tang WX, Yin LF, Shi YS, Dong GS, Jin XF, Jiang XM, Liu FQ, Qian HJ, Sun K, Wang LM, Rossi G, Qiu ZQ, Shi J. Body-centered-cubic Ni and its magnetic properties.
PHYSICAL REVIEW LETTERS 2005;
94:137210. [PMID:
15904031 DOI:
10.1103/physrevlett.94.137210]
[Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2004] [Indexed: 05/02/2023]
Abstract
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+/-0.08 micro(B)/atom. The cubic magnetocrystalline anisotropy of bcc Ni is determined to be +4.0x10(5) ergs x cm(-3), as opposed to -5.7x10(4) ergs x 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.
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