Effects of Oxygen Vacancy Defect on Magnetic Properties of (Ca,Mn)O Doped System

Authors

  • B. Khalil LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco
  • S. Naji LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco Department of Physics, faculty of sciences, Ibb university, Ibb , Yemen
  • A. Benyoussef LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco Institute of Nanomaterials and Nanotechnology, MAScIR, Rabat, Morocco Hassan II Academy of Science and Technology, Rabat, Morocco
  • H. Labrim Centre National de l'Energie, des sciences et des Techniques Nucléaires, Rabat, Morocco
  • M. Bhihi LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco
  • M. Lakhal LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco
  • A. Belhaj Département de Physique, Faculté Polydisciplinaire, Université Sultan Moulay Slimane, Béni Mellal, Morocco
  • A. El Kenz LMPHE, (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco

DOI:

https://doi.org/10.34874/PRSM.mjcm-vol17iss2.4225

Keywords:

Ab-intio, CaO, (Ca, Mn)O, native point defect, ferromagnetic, spin-glass.

Abstract

We study the (Ca, Mn)O doped system with oxygen vacancy point defects in monoxide CaO material. Using density functional theory calculation based on a generalized gradient approximation, we show that such a defect can convert the ground state from a spin glass to a ferromagnetic phase. Then, we discuss the stability of the magnetism in the (Ca, Mn)O doped system. The ferromagnetic and the disordered local moment states are also investigated and a super-exchange mechanism is proposed to explain such ferromagnetic magnetic behaviours. Based on the mean field approximation used in the elaboration of the Heisenberg model, we estimate the Curie temperature.

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Issue

Vol. 17 No. 2 (2015)

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Articles

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