Amorphous 5f Ferromagnetic Hydrides UH_{3}Mo_{x}

• Authors: I. Tkach , N. Kim-Ngan , S. Maškova , A. Andreev , Z. Matěj , L. Havela
• Languages of publication: EN

Abstracts

EN

γ-U metal, stabilized down to room temperature in the bcc structure by Mo doping, can absorb hydrogen at high H_{2} pressures only. The product is amorphous hydride UH_{3}Mo_{x} analogous to β-UH_{3}. Such hydrides are ferromagnetic with high Curie temperatures (up to 200 K), enhanced with respect to β-UH_{3}. Magnetic moment of U also increases. Large disorder together with high anisotropy lead to a very high coercivity, reaching 4 T at low temperatures. As amorphization normally tends to suppress magnetic ordering of U compounds, such hydrides represent a new class of materials, amorphous U-based ferromagnets with relatively high Curie temperature.

Keywords

EN

75.50.Kj; 75.50.Vv; 72.15.Cz

Discipline

• 72.15.Cz: Electrical and thermal conduction in amorphous and liquid metals and alloys
• 75.50.Vv: High coercivity materials
• 75.50.Kj: Amorphous and quasicrystalline magnetic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 292-293

Dates

published

2014-07

Contributors

author

I. Tkach

• Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic

author

N. Kim-Ngan

• Institute of Physics, Pedagogical University, Podchorazych 2, 30 084 Krakow, Poland

author

S. Maškova

• Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic

author

A. Andreev

• Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague, Czech Republic

author

Z. Matěj

• Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic

author

L. Havela

• Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic

References

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Identifiers

DOI

10.12693/APhysPolA.126.292