Superparamagnetic Behavior in La0.7Ca0.3MnO3 Perovskite: Monte Carlo Simulations

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• 作者：R. Masrour (1) (2)
  L. Bahmad (2)
  E. K. Hlil (3)
  M. Hamedoun (4)
  A. Benyoussef (2) (4) (5)
  
  1. Laboratory of Materials ; Processes ; Environment and Quality ; Cady Ayyed University ; National School of Applied Sciences ; SidiBouzid ; BP. 63 ; 46000 ; Safi ; Morocco
  2. LMPHE (URAC 12) ; Facult茅 des Sciences ; Universit茅 Mohammed V-Agdal ; Av. Ibn Batouta ; B.P. 1014 ; Rabat ; Morocco
  3. Institut N茅el ; CNRS et Universit茅 Joseph Fourier ; BP 166 ; F-38042 ; Grenoble CEDEX 9 ; France
  4. Institute of Layers and Nanotechnologies ; MAScIR ; Rabat ; Morocco
  5. Hassan II Academy of Science and Technology ; Rabat ; Morocco
  
• 关键词：Monte Carlo simulations ; Critical temperature ; Magnetic hysteresis cycle ; Exchange interactions ; Coercive magnetic field
• 刊名：Journal of Superconductivity Incorporating Novel Magnetism
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：28
• 期：1
• 页码：165-168
• 全文大小：452 KB
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• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Superconductivity, Superfluidity and Quantum Fluids
  Magnetism and Magnetic Materials
  Condensed Matter
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1557-1947

文摘

The magnetic properties of ferromagnetic La0.7Ca0.33MnO3 perovskite have been studied using Monte Carlo simulations within the Ising model framework. The considered Hamiltonian includes the first nearest neighbor, an external magnetic field, and a crystal field. The thermal magnetizations and magnetic susceptibilities are computed for a fixed system size N = 5. In addition, the critical temperature is deduced. The magnetization versus the exchange interactions and crystal field are deduced for a fixed system size. The magnetic hysteresis cycle versus temperature is also established.