Magnetic First-order Phase Transitions in Nano-cluster Systems within the Framework of Landau Approximation

Author(s) O.V. Yushchenko, A.Yu. Badalyan
Affiliations

Sumy State University, 2, Rimsky Korsakov Str., 40007 Sumy, Ukraine

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Issue Volume 9, Year 2017, Number 4
Dates Received 23 April 2017; revised manuscript received 25 July 2017; published online 27 July 2017
Citation O.V. Yushchenko, A.Yu. Badalyan, J. Nano- Electron. Phys. 9 No 4, 04022 (2017)
DOI 10.21272/jnep.9(4).04022
PACS Number(s) 75.30.Kz, 23.20. – g
Key words Magnetization (18) , Free energy, Order parameter Landau approximation.
Annotation The phenomenological model of the first-order phase transition between the paramagnetic and magneto-ordered states of the nanocluster system was presented in the paper. In addition to the main thermodynamic components, intercluster interaction and the effect of external pressure were included into the dependence of the free energy. The temperature dependence of the stationary value of relative magnetization and the critical value of pressure, at which a transition is possible, were found.

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