Characterization of New U-Ni-X₂ Splats and Study of their Physical Properties

• Authors: Z. Molčanová , M. Mihalik , M. Mihalik , M. Reiffers , A. Džubinská , M. Huráková , V. Kavečanský , M. Paukov , L. Havela
• Languages of publication: EN

Abstracts

EN

We explored the crystal structure, magnetic, and transport properties of UNiX₂ (X = Ge, Si) materials, which were prepared by a conventional metallurgical technique and by rapid solidification - splat cooling. The UNiSi₂ splat is mostly single phase, containing only small traces of a minority phase. Magnetic and electrical properties of the splat resemble properties of samples, which were prepared by conventional methods, exhibiting a ferromagnetic transition at about 91 K and similar temperature dependence of resistivity. The coercive field of μ₀H_c=4.25 T is much enhanced due to the magnetic anisotropy introduced by the sample preparation technique. The Barkhausen jumps were observed on the hysteresis loop. Magnetization of the sample does not saturate in fields up to μ₀H=9 T. The phase structure of UNiGe₂ splat is not completely solved and will be subject of our study in future. Our preliminary results indicate the presence of completely new phase with tetragonal crystal structure and antiferromagnetic ordering below 54 K.

Keywords

EN

61.82.Bg; 75.50.Kj; 75.30.-m; 72.15.-v

Discipline

• 72.15.-v: Electronic conduction in metals and alloys
• 61.82.Bg: Metals and alloys
• 75.50.Kj: Amorphous and quasicrystalline magnetic materials
• 75.30.-m: Intrinsic properties of magnetically ordered materials(for critical point effects, see 75.40.-s; for magnetotransport phenomena, see 75.47.-m)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 994-996

Dates

published

2017-04

Contributors

author

Z. Molčanová

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

M. Mihalik

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

M. Mihalik

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

M. Reiffers

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia
• Faculty of Humanities and Natural Sciences, University of Prešov, 17. novembra 1, SK 081 16 Prešov, Slovakia

author

A. Džubinská

• Faculty of Humanities and Natural Sciences, University of Prešov, 17. novembra 1, SK 081 16 Prešov, Slovakia

author

M. Huráková

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

V. Kavečanský

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

M. Paukov

• Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic

author

L. Havela

• Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic

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Identifiers

DOI

10.12693/APhysPolA.131.994