Research Progress of Room Temperature Single-phase Multiferroicity and Magnetoelectric Coupling Effect in Ga2-xFexO3
Regarding single-phase multiferroic materials,using an electric field as a reversible means of magnetism control rather than a magnetic field would be an ideal method to realize the next generation of low-power,high-density,and multifunctional magnetoelectric(ME)devices.Nevertheless,the majority of these currently identified materials reveal weak room-temperature(RT)ferroelectricity,ferromagnetism,or ME operational temperatures below room temperature,which severely limit their practical applications in production.Recent research has found that the residual ferroelectric polarization(Pr)strength and saturation magnetization(Ms)intensity of the type-Ⅱ single-phase multiferroic Ga2-xFexO3 with strong(ME)coupling can reach 25 μ C/cm2 and 1.2 μB/f.u.,respectively,under optimal conditions.Therefore,it is a new kind of alternative material that has great potential to solve the above problems simultaneously.This review first introduces the research status and potential applications of single-phase multiferroic materials.Subsequently,it provides a comprehensive summary of the research progress on the single-phase multiferroicity and ME coupling effects of Ga2-xFexO3 materials.Finally,a detailed discussion is conducted regarding the key scientific questions and challenges that Ga2-xFexO3 is likely to face in the future.
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