A computational study on magnetic effects of Zn1-xCrxO type diluted magnetic semiconductor

作者：Duru Izzet Parug^*; Deger Caner; Kalayci Taner; Arucu Muhammet

来源：Journal of Magnetism and Magnetic Materials, 2015, 396: 268-274.

DOI：10.1016/j.jmmm.2015.08.031

• Diluted magnetic semiconductors
• Exchange-bias
• Soft ferromagnetism
• Monte Carlo simulation

Diluted magnetic semiconductors (DMS) have been intensely investigated both experimentally and theoretically in recent years. In spite of large body of studies to have a better understanding on working principles of devices based on DMS materials and taking a detailed control during fabrication process, nature of the system remains largely unknown It is proposed that dominant contribution to DMS Hamiltonian is originated from ferromagnetic interaction between antiferromagnetic Cr+3 and its nearest neighbors rather than long-range interactions which commonly reported. In the light of experimental data obtained from literature, we simulated Zn1-xCrxO wurtzite thin film based on Metropolis algorithm and Markov Chain Monte Carlo (MC-MC) method as realistic as possible. We found that the soft ferromagnetic behaviour of Zn1-xCrxO thin film emerges by increasing doping ratios up to 15% (x=0.15), then it gradually vanishes above 15% (x=0.15) at room temperature. Results obtained here was found to be highly consistent with experimental studies.

• 出版日期2015-12-15