Effect of oxygen concentration on the ferromagnetic transition of La1.9Sr0.1CoMnO6 thin films
Source abstract
Abstract
In this study, the effect of oxygen vacancies on structural and magnetic properties of La1.9Sr0.1CoMnO6 (LSCMO) films deposited on Si (100) substrate was investigated by varying the oxygen partial pressure during film growth, by pulsed laser deposition. The Rietveld refinement manifest the monoclinic phase (with space group P21/n) of the bulk La1.9Sr0.1CoMnO6 sample. A shift in ferromagnetic (FM) phases (Tc) are obtained in both the LSCMO films from that of the bulk La1.9Sr0.1CoMnO6 sample confirmed by a magnetic measurement. The oxygen vacancies, observed through X-ray photoelectron spectroscopy (XPS) measurement, can induce the local vibronic Mn3+–O–Mn3+ superexchange interactions in direct competition with static ferromagnetic Mn4+–O–Mn4+ interactions. In this paper, attempts have been made to tune the magnetic phases by controlling the oxygen vacancies.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Multiferroics and related materials · Advanced Condensed Matter Physics
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