Pressure effect on magnetic properties of

✍ Scribed by Z. Arnold; O. Isnard; H. Mayot; Y. Skorokhod; J. Kamarád

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 690 KB
• Volume: 150
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2010.06.043

✦ Synopsis

The experimental study of the pressure effect on magnetization M S and compensation temperature T Comp of ferrimagnetic GdCo 2 Fe 2 B in a magnetic field up to 7 T under hydrostatic pressures up to 10 kbar is presented. Due to the mutual antiparallel arrangement of Gd and 3d sublattices and the negligible pressure effect on localized Gd magnetic moment, the observed increase of M s with pressure (dM s (5 K)/dp = +0.007 µ B kbar -1 ) can be attributed to the pressure induced decrease of 3d magnetic moments, predominately to the decrease of Fe moment, dm Fe /dp = -2.8.10 -3 µ B /at. kbar. The pressure induced increase of M s is also responsible for the remarkable increase of T Comp under pressure (dT Comp /dp = +0.90 K/kbar). This opens the field to tunablibilty of the T Comp .