Effect of Cr3+ substitution on AC susceptibility of Ba hexaferrite nanoparticles

被引:93
作者
Slimani, Y. [1 ]
Baykal, A. [2 ]
Manikandan, A. [3 ]
机构
[1] Imam Abdulrahman Bin Faisal Univ, Dept Biophys, IRMC, POB 1982, Dammam 31441, Saudi Arabia
[2] Imam Abdulrahman Bin Faisal Univ, Dept Nanomed Res, IRMC, POB 1982, Dammam 31441, Saudi Arabia
[3] Bharath Univ, Bharath Inst Higher Educ & Res, Dept Chem, Madras 600073, Tamil Nadu, India
关键词
M-type hexaferrite; Hard ferrite; AC magnetic susceptibility; Cr substitution; MAGNETIC-PROPERTIES; TRANSITION-TEMPERATURE; FREQUENCY-DEPENDENCE; GLASS BEHAVIOR; DYNAMICS; STATE; FIELD;
D O I
10.1016/j.jmmm.2018.03.025
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this study, nano-sized particles of BaCrxFe12 O-x(19) (0.0 <= x <= 1.0) hexaferrite were fabricated through citrate auto gel combustion process and the impact of Cr-ion substitution on ac magnetic susceptibility properties of Ba-hexaferrite were explored. X-ray powder diffraction (XRD) measurements approved the purity of prepared samples and showed a reduction of the average crystallite size with increasing the content of Cr. Transmission electron microscopy (TEM) observation indicated the hexagonal morphology of all samples. AC susceptibility measurements displayed a frequency dependence of the magnetic responses. These measurements indicated that there are strong magnetic interactions (which is the highest for BaCr0.3Fe11.7O19 NP) between particles which cause a superspin glass-like (SSG) behavior at low temperatures. Estimating the values of loss power density revealed an increase of loss power density with increasing Cr-substitution element. The relative sensitivity of the prepared MNPs to the variation of applied frequency is very influenced by Cr-substitution and is highest in BaCr0.3Fe11.7O19 MNPs, suggesting that this sample can be considered as magnetic nanomaterial for hyperthermia and for many other applications. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:204 / 212
页数:9
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