Concentric MnFe2O4-rich core/Cr2O3-rich shell nanoparticles

8th International Conference on Fine Particle Magnetism

Liébana-Viñas, S.^1 ; Otero-Lorenzo, R.^1 ; Rivas-Murias, B.^2 ; Salgueiriño, V.^1

Departamento de Física Aplicada, Universidade de Vigo, 36310, Vigo, Spain^1

Centro de Investigatión en Química Biológica y Materiales Moleculares (CIQUS), Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain^2

关键词: Antiferromagnetics;    Chemical controls;    Cluster spin glass;    Exchange bias effects;    Ferroelectric oxides;    Interface intermixing;    Postsynthetic modification;    Shell nanoparticles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/521/1/012002/pdf
DOI  :  10.1088/1742-6596/521/1/012002

来源: IOP

【 摘 要 】

Concentric MnFe2O4-rich core/Cr2O3-rich shell nanoparticles were obtained considering a postsynthetic modification of preformed MnFe2O4@Cr(OH)3 units. The complex nanomaterials display an exchange bias (EB) effect likely due to the interface intermixing and possible cluster spin-glass phase and the presence in the same units of ferrimagnetic and antiferromagnetic-ferroelectric oxides. This particular case of transition metal oxides (TMO) heterostructures underlines the potential of chemical control in their final magnetic properties.