热疗用Mg0.4Cu0.6CrxFe2-xO4尖晶石铁氧体的结构、磁性和产热性能的调整

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physics and Chemistry of Solids Pub Date : 2025-03-29 DOI:10.1016/j.jpcs.2025.112741

I. Khishigdemberel , E. Uyanga , B. Enkhmend , N. Jargalan , S. Kobayashi , W. Zhang , D. Sangaa

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引用次数: 0

摘要

本研究探讨了采用溶胶-凝胶法合成的 Mg0.4Cu0.6CrxFe2-xO4 （x = 0、0.2、0.5、1.0）尖晶石铁氧体的结构、磁性和发热特性。利用 X 射线衍射（XRD）和 Rietveld 精炼分析了结构参数，而傅立叶变换红外光谱（FT-IR）则确认了振动模式。利用 SQUID 磁强计对磁性能进行了表征，包括一阶反向曲线 (FORC)、零炉冷/风冷 (ZFC/FC) 和热重 (TGA) 分析。通过测量 75 kHz 交变磁场下的比吸收率 (SAR)，对发热能力进行了评估。结果表明，铬的替代导致了从混合尖晶石到普通尖晶石的结构转变，并伴随着饱和磁化（Ms）、矫顽力（Hc）和居里温度（Tc）的逐渐降低。尽管随着铬含量的增加，SAR 值有所下降，但 x ≤ 0.5 的成分仍能产生足够的热量，可用于热疗。Tc的降低限制了过度加热，从而提高了安全性，证明了这些材料在受控热疗方面的潜力。

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Tuning of structural, magnetic and heat generation properties of Mg0.4Cu0.6CrxFe2-xO4 spinel ferrites for hyperthermia applications

This study investigates the structural, magnetic and heat generation properties of Mg_0.4Cu_0.6Cr_xFe_2-xO₄ (x = 0, 0.2, 0.5, 1.0) spinel ferrites synthesized using the sol-gel method. The structural parameters were analyzed using X-ray diffraction (XRD) with Rietveld refinement, while Fourier Transform Infrared (FT-IR) spectroscopy confirmed vibrational modes. Magnetic properties were characterized using SQUID magnetometer, including first-order reversal curve (FORC), zero-field-cooled/field-cooled (ZFC/FC) and thermogravimetric (TGA) analyses. The heat generation capability was assessed by measuring the specific absorption rate (SAR) under an alternating magnetic field at 75 kHz. Results indicate that Cr substitution leads to a structural transition from mixed to normal spinel, accompanied by a progressive decrease in saturation magnetization (M_s), coercivity (H_c), and Curie temperature (T_c). Despite the decline in SAR values with increasing Cr content, compositions with x ≤ 0.5 exhibited sufficient heat generation for hyperthermia applications. The reduction in T_c enhances safety by limiting excessive heating, demonstrating the potential of these materials for controlled hyperthermia treatment.

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.