1 Ocak 2020 Dergi makalesi Açık Erişim

Duru, I. P.; Ozugurlu, E.; Arda, L.

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    <subfield code="a">Arda, L.</subfield>
    <subfield code="u">Bahcesehir Univ, Fac Engn &amp; Naturel Sci, Dept Mechatron Engn, TR-35359 Istanbul, Turkey</subfield>
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    <subfield code="a">A first-principles study of Mg/Ni induced magnetic properties of Zn0.95-xMgxNi0.05O</subfield>
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    <subfield code="a">Duru, I. P.</subfield>
    <subfield code="u">Marmara Univ, Fac Sci &amp; Arts, Dept Phys, TR-35722 Istanbul, Turkey</subfield>
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    <subfield code="a">Magnetic properties of Mg/Ni doped ZnO were investigated by the first-principles study. The generalized gradient approximation (GGA) in Perdew-Burke-Ernzerhov of the scheme as a form of density functional theory (DFT) utilizing the plane-wave pseudo-potential method was used. Calculations were performed for a constant Ni doping ratio as 5% and different concentrations of Mg varying from 1% to 5%. It was shown that Mg concentrations helped to tune band gap and mediate the ferromagnetic property. 1% Mg-doped structure had a half-metallic ferromagnetic (HMF) state. Meanwhile, metallic behavior (MB) was observed for higher concentrations of Mg ( &amp;gt; 1%) impurities. It was revealed that Mg-doped ZnNiO possesses ferromagnetic behavior solely for 1% Mg while other doping ratios were showing distinctive phases including antiferromagnetism (AFM). Besides, there is no evidence of a clear connection between the doping concentration of the Mg and the magnetic phase. Ni distant/near oxygen vacancies (V-0) enhanced the FM state; however, distant vacancies led to HMF state for all Mg concentrations. Zn-d, O-p, and Ni-d (dominates) control the spin-up/down channels by hybridization.</subfield>
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