Title :
Physical properties of Ni2MnGe alloy films with different atomic orders
Author :
Kim, R.J. ; Lee, N.N. ; Kim, B.J. ; Lee, Y.P. ; Kudryavtsev, Y.V. ; Kim, K.W.
Author_Institution :
Quantum Photonic Sci. Res. Center, Hanyang Univ., Seoul, South Korea
Abstract :
Ni2MnGe films with significantly different structural orders were fabricated, and the influence of atomic ordering on various physical properties has been investigated. The structural characterization was performed by X-ray diffraction (XRD). The temperature dependence of magnetization was investigated with a superconducting quantum interference device. The optical properties were obtained using a spectroscopic ellipsometer, and the magneto-optical properties were understood by measuring the equatorial Kerr effect (EKE). Infrared and ultraviolet spectra of the films were also studied. It was found that the structural disorder in Ni2MnGe film causes lack of the ferromagnetic order and noticeable changes in the energy band structure.
Keywords :
Kerr magneto-optical effect; X-ray diffraction; ellipsometry; ferromagnetic materials; germanium alloys; infrared spectra; magnetic thin films; magnetisation; manganese alloys; metallic thin films; nickel alloys; ultraviolet spectra; Ni2MnGe; X-ray diffraction; XRD; alloy films; atomic orders; energy band structure; equatorial Kerr effect; ferromagnetic order; infrared spectra; magnetization; magneto-optical properties; spectroscopic ellipsometer; structural disorder; superconducting quantum interference device; ultraviolet spectra; Atomic measurements; Magnetic properties; Magnetization; Optical diffraction; Optical films; Superconducting films; Superconducting photodetectors; Temperature dependence; X-ray diffraction; X-ray scattering;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464497
