A study of the properties of core/shell/shell Ag/FeCo/Ag nanoparticles

作者：Kamzin A S^*; Takahashi M; Maenosono S; Valiullin A A

来源：Physics of the Solid State, 2017, 59(10): 2023-2029.

DOI：10.1134/S1063783417100201

The properties of heterophase core/shell/shell Ag/FeCo/Ag nanoparticles synthesized via a plasma method that are promising for biological applications are studied. As is established, the core/shell/shell Ag/FeCo/Ag nanoparticles exhibit a superparamagnetic state at room temperature that allows one to manage the hyperthermia process. The magnetic characteristics of core/shell/shell Ag/FeCo/Ag nanoparticles are interpreted by assuming partial oxidation of the surface layer of a ferromagnetic FeCo shell and formation of the antiferromagnetic CoxFe1-xD layer on the FeCo surface. The interaction between the surface antiferromagnetic CoxFe1-xD layer and the ferromagnetic FeCD 3/4 shell causes the emergence of the exchange bias in Ag/FeCo/Ag nanoparticles.

• 出版日期2017-10