Extreme instability of magnetic Fe-moment in amorphous alloys under pressure

0484403 - FZÚ 2018 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Kamarád, Jiří - Míšek, Martin - Arnold, Zdeněk
Extreme instability of magnetic Fe-moment in amorphous alloys under pressure.
Journal of Physics: Conference Series. Vol. 950. Bristol: IOP Publishing, 2017, s. 1-4, č. článku 042027. ISSN 1742-6588.
[Joint AIRAPT-25th and EHPRG-53rd International Conference on High Pressure Science and Technology. Madrid (ES), 30.08.2015-04.09.2015]
Grant CEP: GA ČR GA15-03777S
Institucionální podpora: RVO:68378271
Klíčová slova: magnetic moment * amorphous Fe-based alloys * high pressure
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

The effect of high hydrostatic pressure on magnetization of the selected Fe-, FeNi-, FeCr- and FeW-based amorphous alloys has been studied in pressure range up to 1.2 GPa. The very strong non-linear decrease of magnetization under pressure was observed in all the studied alloys, with the extreme value of dlnM/dP =780*10(-3) GPa(-1) in the case of the amorphous Fe93Zr7 alloy. Moreover, the spin glass behaviour of the alloy at temperatures below 50 K has been strongly changed by pressure. The received results support the theoretical concepts based on a dominant role of the pressure-induced widening of the 3d-band of transition metals under high pressure.
Trvalý link: http://hdl.handle.net/11104/0279564