Specific heat of EuIn2P2 at high magnetic fields

✍ Scribed by Hiroyuki Hidaka; Yoichi Ikeda; Ikuto Kawasaki; Tatsuya Yanagisawa; Hiroshi Amitsuka

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 305 KB
• Volume: 404
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2009.07.027

✦ Synopsis

We have carried out specific heat measurements on EuIn 2 P 2 at high magnetic fields perpendicular to the c-axis in the hexagonal crystal structure in order to understand its thermal properties. The temperature dependence of the specific heat exhibits a clear l-type anomaly due to a magnetic transition at T C ¼ 24 K, indicating that the magnetic transition is of second-order. The l-type anomaly becomes markedly broader with increasing the magnetic field. This remarkable field-dependence is consistent with the results of previous magnetization measurements which suggest that Eu 2þ magnetic moments align ferromagnetically perpendicular to the c-axis below T C . In addition, a hump in the specific heat is observed around 7 K, which can be ascribed to the Zeeman splitting of the Eu 2þ multiplet by internal magnetic fields.