| 尖晶石结构MFe2O4(M=Ca,Mg,Cu,Zn)纳米晶粉末的制备和磁性能 |
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| 引用本文： | 陈鹏,姜林文,刘进军,杨姗姗,李江涛,陈红兵,何骏,王煜.尖晶石结构MFe2O4(M=Ca,Mg,Cu,Zn)纳米晶粉末的制备和磁性能[J].无机化学学报,2019,35(6):1101-1108. |
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| 作者姓名： | 陈鹏 姜林文 刘进军 杨姗姗 李江涛 陈红兵 何骏 王煜 |
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| 作者单位： | 宁波大学材料科学与化学工程学院, 新型功能材料及其制备科学国家重点实验室培育基地, 宁波 315211,宁波大学材料科学与化学工程学院, 新型功能材料及其制备科学国家重点实验室培育基地, 宁波 315211,宁波大学材料科学与化学工程学院, 新型功能材料及其制备科学国家重点实验室培育基地, 宁波 315211,宁波大学材料科学与化学工程学院, 新型功能材料及其制备科学国家重点实验室培育基地, 宁波 315211,宁波大学材料科学与化学工程学院, 新型功能材料及其制备科学国家重点实验室培育基地, 宁波 315211,宁波大学材料科学与化学工程学院, 新型功能材料及其制备科学国家重点实验室培育基地, 宁波 315211,钢铁研究总院功能材料研究所, 北京 100081,钢铁研究总院功能材料研究所, 北京 100081 |
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| 基金项目： | 国家自然科学基金（No.51701098）、宁波市自然科学基金（No.2017A610100）、山东大学晶体材料国家重点实验室开放项目（No.KF1706）和宁波大学王宽城幸福基金项目资助。 |
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| 摘 要： | 采用新型氨基凝胶自燃法成功制备出尖晶石结构MFe2O4（M=Ca，Mg，Cu，Zn）纳米晶粉末。对合成粉体样品的物相、形貌和磁性能进行了详细的研究。经能量色散X射线谱分析确定了合成MFe2O4粉末的高纯度。系统地研究了所合成的MFe2O4纳米晶粉末的磁性能。所有样品的磁滞回线均较窄，表明了它们具有软磁的特征。经测试得出4种铁氧体的饱和磁化强度（Ms）分别为2.1，29.3，24.1和4.2 emu·g-1；剩余磁化强度（Mr）分别为0.2，2.3，11.4和0.2 emu·g-1。这4种铁氧体样品的Mr/Ms值均小于0.5。对CaFe2O4和MgFe2O4两种典型铁氧体的零场冷却和场冷磁性能作了详细的研究。其中CaFe2O4样品的磁化强度在75 K以下有不一致的变化趋势，这是由于其发生了磁相变。
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| 关 键 词： | 尖晶石型铁氧体 自燃烧法 磁性能 |
| 收稿时间： | 2019/1/6 0:00:00 |
| 修稿时间： | 2019/3/30 0:00:00 |
Syntheses and Magnetic Properties of Spinel-Type MFe2O4 (M=Ca, Mg, Cu, Zn) Nanocrystalline Powders |
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| CHEN Peng,JIANG Lin-Wen,LIU Jin-Jun,YANG Shan-Shan,LI Jiang-Tao,CHEN Hong-Bing,HE Jun and WANG Yu.Syntheses and Magnetic Properties of Spinel-Type MFe2O4 (M=Ca, Mg, Cu, Zn) Nanocrystalline Powders[J].Chinese Journal of Inorganic Chemistry,2019,35(6):1101-1108. |
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| Authors: | CHEN Peng JIANG Lin-Wen LIU Jin-Jun YANG Shan-Shan LI Jiang-Tao CHEN Hong-Bing HE Jun and WANG Yu |
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| Institution: | State Key Laboratory Base of Functional Materials and its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China,State Key Laboratory Base of Functional Materials and its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China,State Key Laboratory Base of Functional Materials and its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China,State Key Laboratory Base of Functional Materials and its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China,State Key Laboratory Base of Functional Materials and its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China,State Key Laboratory Base of Functional Materials and its Preparation Science, Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China,Division of Functional Material Research, Central Iron & Steel Research Institute, Beijing 100081, China and Division of Functional Material Research, Central Iron & Steel Research Institute, Beijing 100081, China |
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| Abstract: | Magnetic spinel-type MFe2O4 (M=Ca, Mg, Cu and Zn) nanocrystalline powders were successfully prepared by auto-combustion method using a novel amino-based gel. The phase identification, morphology and magnetic properties of as-synthesized powders were studied in detail. The high purity of synthesized MFe2O4 powders was comfirmed by energy dispersive X-ray spectroscopy. Magnetic properties of as-synthesized MFe2O4 nanocrystalline powders were investigated systematically. All the samples presented a rather narrow hysteresis loop, suggesting the soft magnetic features. The saturated magnetization (Ms) of the four ferrites were 2.1, 29.3, 24.1, and 4.2 emu·g-1, respectively, and the residual magnetization (Mr) were 0.2, 2.3, 11.4, and 0.2 emu·g-1, respectively. Mr/Ms values of four ferrite samples were all less than 0.5. Zero-field-cooled and field-cooled magnetic properties of CaFe2O4 and MgFe2O4 samples as two typical ferrites were investigated in detail. The magnetization of CaFe2O4 sample presented an inconsistent variation tendency below 75 K due to the occurrence of magnetic phase transition. |
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| Keywords: | spinel-type ferrites auto-combustion method magnetic properties |
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