Effect of substrate temperature on antiphase boundaries and spin polarization of thin Fe3O4 film on Si (100)

Sun, Li; Ban, Dongmei; Liu, Er; Li, Xiaoyan; Peng, Hong-Yan; Yao, Zujie; Huang, Zhaocong; Zhai, Ya; Zhai, Hongru

doi:10.1016/j.tsf.2019.137698

Cited by 4 publications

(1 citation statement)

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“…There are a large number of studies concerning the analysis of the magnetoresistances ( MR ) of the Fe 3 O 4 nanoparticles pressed into pellets on the external field, temperature, grain sizes, or their shape [ 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ]. Magnetoelectronic devices composed of ordered three-dimensional arrays of magnetite nanoparticles on the SiO 2 isolation layer [ 51 ] as well as of the SiO 2 coated Fe 3 O 4 nanospheres were investigated [ 55 , 56 ].…”

Section: Resultsmentioning

confidence: 99%

New Insights on the Spin Glass Behavior in Ferrites Nanoparticles

Burzo

Tetean

2022

Nanomaterials

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The magnetic properties of nanocrystalline MxFe3−xO4 ferrites with M=Fe, Co, and Zn were investigated. The data support a core–shell model, where the core is ferrimagnetically ordered, and the shell shows a spin glass type behavior. The reduced magnetizations of spin glass components follow an mg = (1 – b/H−1/2) field dependence. The b values are strongly correlated with the intensities of exchange interactions. The field dependences of the magnetoresistances of Fe3O4 and ZnxFe3−xO4 nanoparticles pellets, experimentally determined, are well described if instead of the core reduced magnetization, commonly used, that of the shell is taken into account. For similar compositions of the nanoparticles, identical b values are obtained both from magnetization isotherms and magnetoresistances studies. The half-metallic behavior of spinel Fe3O4 based nanoparticles is discussed comparatively with those of double perovskites.

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