Features Thermomagnetic Behavior of CrMnFeCoNi High Entropy Alloy

Authors М.P. Semen’ko, Yu.P.Mazur, R.V. Ostapenko

Taras Shevchenko National University of Kyiv, Faculty of Physics, 64/13, Volodymyrska st., 01601 Kyiv, Ukraine

Е-mail smp@univ.kiev.ua
Issue Volume 8, Year 2016, Number 3
Dates Received 15 June 2016; published online 03 October 2016
Citation М.P. Semen’ko, Yu.P.Mazur, R.V. Ostapenko, J. Nano- Electron. Phys. 8 No 3, 03029 (2016)
DOI 10.21272/jnep.8(3).03029
PACS Number(s) 75.50. – y, 75.47.Np
Keywords High entropy alloy, Magnetic susceptibility, Localized magnetic moment, Structure (105) , Annealing (16) .

The temperature dependences of magnetic susceptibility (Т) in the temperature range 300-900 K of CrMnFeCoNi high entropy alloy (HEA) with different thermal prehistory (after cutting samples from the bars (as-cast condition) and after annealing at Тh  800 and 950  С) were studied. It was shown that the investigated alloys were characterized by a positive value , which increases with increasing annealing temperature. The temperature dependences of (Т) were decreasing with increasing T and characterized by irreversibility in a cycle of heating and cooling. Dependencies (Т) in the lower temperature range were analyzed in terms of the availability super paramagnetic particles (complexes) created a certain type of atoms placed in the non-magnetic or paramagnetic matrix with low Curie temperature and low effective localized magnetic moment. The model that links the formation of super paramagnetic particles with features structure of CrMnFeCoNi high entropy was considered.

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