Fe2W型铁氧体BaFe2-x2+CoxFe163+O27(x=0.0~0.8)的微观结构和磁性

doi:10.11901/1005.3093.2020.098

材料研究学报

2020, Vol. 34

Issue (12): 915-920 DOI: 10.11901/1005.3093.2020.098

研究论文

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Fe₂W型铁氧体BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇(x=0.0~0.8)的微观结构和磁性

唐锦¹(

), 李丹², 秦健春¹, 曾纪术¹, 何浩¹, 李益民¹, 刘晨¹

^1.广西科技大学材料科学与工程研究中心柳州 545006
^2.攀枝花学院公共实验教学中心攀枝花 617000

Microstructure and Magnetic Properties of Fe₂W-type Ferrites BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇ (x=0.0~0.8)

TANG Jin¹(

), LI Dan², QIN Jianchun¹, ZENG Jishu¹, HE Hao¹, LI Yimin¹, LIU Chen¹

^1.Research Center of Materials Science and Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
^2.Center of Experimental Teaching for Common Courses, Panzhihua University, Panzhihua 617000, China

引用本文:

唐锦, 李丹, 秦健春, 曾纪术, 何浩, 李益民, 刘晨. Fe₂W型铁氧体BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇(x=0.0~0.8)的微观结构和磁性[J]. 材料研究学报, 2020, 34(12): 915-920.
Jin TANG, Dan LI, Jianchun QIN, Jishu ZENG, Hao HE, Yimin LI, Chen LIU. Microstructure and Magnetic Properties of Fe₂W-type Ferrites BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇ (x=0.0~0.8)[J]. Chinese Journal of Materials Research, 2020, 34(12): 915-920.

全文: PDF(4110 KB) HTML

摘要:

用固相法制备Fe₂W型铁氧体BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇(x=0.0~0.8)，采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱仪(FT-IR)和振动样品磁强计(PPMS-VSM)等手段分析其物相组成、结构和磁性并使用Reitveld拟合分析晶体结构，研究了Co²⁺部分取代Fe²⁺的Fe₂W型铁氧体的微观结构和磁性。结果表明：所有样品都是纯相铁氧体BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇。样品具有W铁氧体结构，晶粒呈良好的六角形结构且分布均匀。用 Co取代能明显提高Fe₂W型铁氧体300 K的饱和磁化强度(M_s)。

关键词 ：无机非金属材料, Fe₂W型铁氧体, 固相法, 微观结构, 磁特性

Abstract：

Fe₂W-type ferrite BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇(x=0.0~0.8) was prepared by solid phase method, and of which the microstructure and magnetic properties were characterized by means of X-ray diffractometer (XRD), scanning electron microscope (SEM), infrared spectrometer (FT-IR) and vibrating sample magnetometer (PPMS-VSM), as well as Reitveld fitting method. The results show that all samples are single phase BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇without residual α-Fe₂O₃. The grain has a good hexagonal structure and the particle size distribution is uniform. Last but not least, the partial substitution of Co²⁺for^{Fe²⁺can significantly improve the saturation magnetization (M_s) at 300 K for Fe₂W-type ferrite BaFe_2-_x²⁺Co_xFe₁₆³⁺O₂₇.}

Key words： inorganic non-metallic materials Fe₂W type ferrite solid phase method microstructure magnetic properties

收稿日期: 2020-04-02

ZTFLH:

TB321

基金资助:国家自然科学基金(51872004);广西科技基地和人才专项(AD19245013);广西科技大学博士基金(19Z29)

作者简介: 唐锦，男，1981年生，博士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.098 或 https://www.cjmr.org/CN/Y2020/V34/I12/915

表1 制备BaCoxFe2-x2+Fe163+O27样品所需试剂的质量

图1 六方铁氧体BaCoxFe2-x2+Fe163+O27 (x=0.0, 0.2, 0.4, 0.6, 0.8)磁粉的X射线衍射图

图2 BaCoxFe2-x2+Fe163+O27 (x=0.0, 0.2, 0.6, 0.8)样品的XRD 精修谱

图3 BaCoxFe2-x2+Fe163+O27(x=0.6)磁体样品的SEM照片

表2 BaCoxFe2-x2+Fe163+O27 (x=0.0, 0.2, 0.4, 0.6, 0.8)样品的结构参数

图4 BaCoxFe2-x2+Fe163+O27(x=0.0~0.8)的FT-IR光谱

图5 W型铁氧体BaCoxFe2-x2+Fe163+O27(x=0.0~0.8)的典型磁滞回线

表3 钴取代Fe2Ｗ型铁氧体BaCoxFe2-x2+Fe163+O27(x=0.0~0.8)在3 K和300 K的Ms和Hc

图6 矫顽力Hc饱和磁化强度Ms在3 K和300 K时随Co取代量x的变化

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