Electromagnetic and microwave absorption properties of Er-Ho-Fe alloys

作     者：Jialiang Luo Shunkang Pan Lichun Cheng Peihao Lin Yu He Junqing Chang 

作者机构：School of Materials Science and EngineeringGuilin University of Electronic Technology Guangxi Key Laboratory of Information MaterialsGuilin University of Electronic Technology School of Materials Science and EngineeringCentral South University 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2018年第36卷第7期

页      面：715-720页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0708[理学-地球物理学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(51361007) Guangxi Natural Science Foundation(2014GXNSFAA118317) Scientific Research Project of Guangxi Education Department(YB2014139) Innovation Project of GUET Graduate Education(YJCXS 201566) Guangxi Key Laboratory of Information Materials(131010-Z) 

主　　题：ErxHo2-xFe17 alloys Reflection loss Electromagnetic parameters Magnetic properties Microwave absorbing properties Rare earths 

摘      要：The ErxHo（2-x）Fe（17）（x = 0.0, 0.1,0.2, 0.3, 0.4） powders were prepared by arc melting and high energy ball milling method. The influence of the Er substitution on phase structure, morphology, saturation magnetization,electromagnetic parameters was investigated by X-ray diffraction（XRD）,scanning electron microscopy（SEM）, vibrating sample magnetometer（VSM） and vector network analyzer（VNA）,respectively. The results show that the saturation magnetization increases and the average particle size increases with the increase of Er content. The minimum absorption peak frequency shifts towards a lower frequency region with the increase of Er content. The ErxHo2-xFe17 powder can achieve the minimum RL of-24.07 dB at 6.96 GHz with a thickness of 2.0 mm and the minimum RL is less than-20 dB at the thickness range from 2.0 to 3.0 mm. The minimum RL of ErxHo2-xFe17 is-37.26 dB at5.68 GHz and the frequency bandwidth of R〈-10 dB reaches about 1.2 GHz with a thickness of 2.4 *** the microwave absorbing properties of the composite with different weight ratios of Er0.3Ho1.7Fe17/graphene were researched. The microwave absorbing peaks of the composite shift to lower frequency with the increase of graphene content. The values of the minimum RL of ErxHo2-xFe17/graphene are close to-10 dB with absorbing coating thicknesses increased.