Quick Search:       Advanced Search
罗家亮,潘顺康,乔自强,成丽春,何煜,常鋆青.La-Ho-Fe合金的制备及其微波吸收特性研究[J].稀有金属材料与工程(英文),2018,47(12):3645~3650.[Luo Jialiang,Pan Shunkang,Qiao Ziqiang,Cheng Lichun,He Yu and Chang Junqing.Preparation and Microwave Absorption Propertiesof La-Ho-Fe Alloys[J].Rare Metal Materials and Engineering,2018,47(12):3645~3650.]
Preparation and Microwave Absorption Propertiesof La-Ho-Fe Alloys
Download Pdf  View/Add Comment  Download reader
Received:June 01, 2017  Revised:August 26, 2017
DOI:
Key words: LaxHo2-xFe17 alloys  ball milling  electromagnetic parameters  magnetic properties  microwave absorbing properties
Foundation item:国家自然科学基金
Author NameAffiliation
Luo Jialiang,Pan Shunkang,Qiao Ziqiang,Cheng Lichun,He Yu and Chang Junqing  
Hits: 114
Download times: 2
Abstract:
      The LaxHo2-xFe17 (x=0.0, 0.2, 0.4, 0.6, 0.8) powders were prepared by arc melting and high energy ball milling method. The influence of the La substitution on phase structure, morphology, magnetic properties and electromagnetic parameters were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), vibrating-sample magnetometry (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 La content. The minimum absorption peak frequency shifts towards a lower frequency region with the increase of La content. The minimum RL of La0.2Ho1.8Fe17 reaches -28.72 dB at 8.72 GHz, and the frequency bandwidth of R<-10 dB reaches about 2.32 GHz with the best matching condition d=1.8 mm. The reflection loss with the thickness ranging of 1.2-2.4 mm could reach -10 dB, which indicates the particles be considered as the promising microwave absorbing materials with better absorption properties.