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 . The cubic magnetocrystalline anisotropy of bcc Ni is determined to be , as opposed to 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.
- Received 18 November 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.137210
©2005 American Physical Society