Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T00: Poster Session III (1pm-4pm PST)
1:00 PM,
Thursday, March 9, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: T00.00205 : Magnetic phase diagram and thermodynamic study of CuB2O4*
Presenter:
Jiunn-Yuan Lin
(National Yang Ming Chiao Tung University)
Authors:
Meng-Jung Hsieh
(Institute of Physics, National Yang Ming Chiao Tung University)
Jiunn-Yuan Lin
(National Yang Ming Chiao Tung University)
field (H) and temperature (T) have indicated existence of unusually complicated
magnetic phase transitions. However, a comprehensive specific heat study was not
available for the construction of a more complete H-T phase diagram on this system
until now. The specific heat data reveal a previously elusive phase boundary in the
high field regime, which is key to a conceptual understanding the complicated phase
diagram of CuB2O4 in such a rather narrow phase space. We have constructed a more
complete magnetic phase diagram of CuB2O4 by the combination of the specific heat,
magnetic, and neutron scattering measurements on the same sample. Moreover, the
quantitative analysis of entropy elucidates the distinct magnetic orderings at Cu(1)
and Cu(2) sites in CuB2O4 resolving a long standing issue.
*This work was supported by NSTC of Taiwan by Grant Nos. of 110-2124-M-A49-007-MY3 and 109-2112-M-009-012-MY3.
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