Статья

Mössbauer spectroscopy, magnetic characteristics, and reflection loss analysis of nickel-strontium substituted cobalt ferrite nanoparticles

Ali GhasemiMaterials Engineering Department, Malek Ashtar University of Technology 1 , Shahin Shahr, IranAndrea PaesanoDepartamento de Física, Centro de Ciências Exatas, Universidade Estadual de Maringá 2 , Maringá, BrazilCarla Fabiana Cerqueira MachadoDepartamento de Física, Centro de Ciências Exatas, Universidade Estadual de Maringá 2 , Maringá, BrazilSagar E. ShirsathDepartment of Physics, Dr. Babasaheb Ambedkar Marathwada University 3 , Aurangabad, IndiaXiaoxi LiuSpin Device Technology Center, Faculty of Engineering, Shinshu University 4 , Nagano, JapanAkimitsu MorisakoSpin Device Technology Center, Faculty of Engineering, Shinshu University 4 , Nagano, Japan

2014en

ABI

Аннотация

In current research work, Co1-xNix/2Srx/2Fe2O4 (x = 0–1 in a step of 0.2) ferrite nanoparticles were synthesized by a sol-gel method. According to the evolution in the subspectral areas obtained from Mössbauer spectroscopy, it was found that the relaxing iron belongs mostly to the site B, since the Mössbauer fraction of site A does not vary appreciably. With an increase in Ni-Sr substitution contents in cobalt ferrite, the coercivity and saturation of magnetization decrease. Variation of reflection loss versus frequency in microwave X-band demonstrates that the reflection peak shifts to lower frequency by adding substituted cations and the synthesized nanoparticles can be considered for application in electromagnetic wave absorber technology.

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Идентификаторы

DOI: 10.1063/1.4866232

Цитирования и источники

Цитирований: 2Использованных источников: 0

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