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| Syntheses and Magnetic Properties of Spinel-Type MFe2O4 (M=Ca, Mg, Cu, Zn) Nanocrystalline Powders |
| Author Name | Affiliation | E-mail | | CHEN Peng | 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 | | | JIANG Lin-Wen | 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 | jianglinwen@nbu.edu.cn | | LIU Jin-Jun | 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 | | | YANG Shan-Shan | 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 | | | LI Jiang-Tao | 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 | | | CHEN Hong-Bing | 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 | | | HE Jun | Division of Functional Material Research, Central Iron & Steel Research Institute, Beijing 100081, China | hejun@cisri.com.cn | | WANG Yu | 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. |
| Keywords: spinel-type ferrites auto-combustion method magnetic properties |
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| CHEN Peng,JIANG Lin-Wen,LIU Jin-Jun,YANG Shan-Shan,LI Jiang-Tao,CHEN Hong-Bing,HE Jun,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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