Magnetic properties of Ni/Au core/shell studied by Monte Carlo simulations

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• 作者：R. Masrour ; L. Bahmad ; M. Hamedoun ; A. Benyoussef ; E.K. Hlil
• 关键词：Ni/Au core/shell ; Monte Carlo simulations ; Critical temperature ; Magnetic hysteresis cycle ; Exchange interactions ; Coercive field
• 刊名：Physics Letters A
• 出版年：10 January, 2014
• 年：2014
• 卷：378
• 期：3
• 页码：276-279
• 全文大小：360 K

文摘

The magnetic properties of ferromagnetic Ni/Au core/shell have been studied using Monte Carlo simulations within the Ising model framework. The considered Hamiltonian includes the exchange interactions between Ni-Ni, Au-Au and Ni-Au and the external magnetic field. The thermal total magnetizations and total magnetic susceptibilities of core/shell Ni/Au are computed. The critical temperature is deduced. The exchange interaction between Ni and Au atoms is obtained. In addition, the total magnetizations versus the external magnetic field and crystal filed for different temperature are also established.