Structure and magnetic properties of TbCo7-xMx

✍ Scribed by Guo, Yongquan ;Feng, Weicun ;Luo, Jun ;Liang, Jingkui ;Yu, Xiaojun ;Li, Wei

• Book ID: 105363283
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 326 KB
• Volume: 202
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200520070

✦ Synopsis

Abstract

A novel intermetallic compound, TbCo~7–x~M~x~ (M = 3d transition metal or normal metal), has been successfully synthesized. TbCo~7–x~M~x~ crystallizes in a hexagonal TbCu~7~ structure with space group of P6/mmm. According to the structural refinement, the M dopants occupy the 2e and 3g crystal positions based on their electronegativities. TbCo~7–x~M~x~ exhibits ferromagnetic order. The saturation moment has been calculated with a corrected magnetic valence model; the calculated results agree well with experiment. The correction to the structural stability model of TbCo~7–x~M~x~ has been discussed in terms of the effective atomic radius ratio and the difference of electronegativity between Tb and (Co, M). (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)