Room temperature ferromagnetic property of Fe-Y (Fe∶ Y-6.5)composite oxide nano-cluster via an extremely easy and scalable method

• 作者: Yi Sui Xiaoyu Liu Changsheng Liu
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: MAGNETISM AND MAGNETIC MATERIALS
• 页码范围: 696-702
• 页数: 7页
• 语种: 英文

摘要

A novel Fe-Y composite oxide (Fe∶ Y-6.5) nanocluster was synthesized by self-assembly approach.The α-Fe2O3 and cubic-Y2O3 nanocrystalline with diameter around 10 nm are homogeneously assembled to form a cluster architecture which are constituted of Fe6.5Y composite oxide particles.Additional oxygen vacancies are introduced with cubic-Y2O3,and the oxygen vacancies as Fe3+-Vo-Y3+ between α-Fe2O3 and cubic-Y2O3 nanocrystalline are generated by self-assembly process.Magnetic hysteresis loops recorded by vibrating sample magnetometry at 273 K display a ferromagnetic order,related to the fact that Fe3+-Vo-Y3+ act as defect centers in the bound magnetic polaron model for Fe-Y composite oxide nanomaterial.The ferromagnetic properties are proportional to oxygen vacancy contents,and maximum magnetization (Mm) value of the nano-cluster reaches 5.14 A.m2/g.