Volume 128, Number 2, October 2019
|Number of page(s)||7|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||02 January 2020|
Observation of a ferromagnetic-to-paramagnetic phase transition in Ce0.65Mg0.35Co3
1 School of Electronics and Information, Hangzhou Dianzi University - Hangzhou, Zhejiang 310018, China
2 National Laboratory of Solid State Microstructures, Jiangsu Provincial Key Laboratory for Nano Technology, Nanjing University - Nanjing, Jiangsu 210093, China
3 Research Institute of Materials Science & Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology, Shanxi Normal University - Linfen, Shanxi 041004, China
Received: 18 July 2019
Accepted: 28 October 2019
are promising candidates for the permanent magnets since they can show ferromagnetism and large anisotropy by substituting Mg for Ce in a paramagnetic compound. In this work, a room-temperature ferromagnetism with a second-order magnetic phase transition is observed in the (CMC) compound prepared by a cold crucible levitation melting method. Based on the DC magnetization data, the critical phenomenon around the phase transition point () in CMC is investigated and the critical exponents for spontaneous magnetization, for susceptibility and for critical isothermal magnetization are determined independently by three different data processing techniques including the modified Arrott plot, Kouvel-Fisher plot, and critical isotherm analysis. It is noteworthy that the magnetizations obey the scaling equation, indicating that the critical parameters including Tc, , and are reliable and self-consistent. The calculation of spin interaction with the obtained critical exponents further suggests a long-range ferromagnetic coupling with in CMC.
PACS: 75.30.Kz – Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.) / 75.40.Cx – Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.) / 71.20.Eh – Rare earth metals and alloys
© EPLA, 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.