Enhancement of ferromagnetism upon thermal annealing in plasma assisted MBE grown mixed-phase Mn-doped insulating TiO2 thin films
Source abstract
Abstract
We have investigated the properties of Mn-doped thin films grown on SrTiO3 (100) substrate by plasma assisted molecular beam epitaxy (PAMBE). The microstructural, electrical, optical, and magnetic properties of these thin films have been characterized systematically, with a primary focus on establishing a correlation between magnetic and electrical properties. We have shown that these thin films exhibit room temperature ferromagnetism, and appear to enhance ferromagnetism upon thermal annealing, though the films show high resistance. The possible mechanism for the phenomena is also discussed. It is suggested that the growth condition, oxygen vacancies and structural and interfacial defects, and the bound magnetic polaron (BMP) model account for the magnetism enhancement.
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Research context
OpenAlex topics: ZnO doping and properties · Magnetic and transport properties of perovskites and related materials · Electronic and Structural Properties of Oxides
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