Consecutive magnetic phase diagram of UCoGe-URhGe-UIrGe system
Ji\v{r}\'i Posp\'i\v{s}il, Yoshinori Haga, Atsushi Miyake, Shinsaku, Kambe, Naoyuki Tateiwa, Yo Tokunaga, Fuminori Honda, Ai Nakamura, Yoshiya, Homma, Masashi Tokunaga, Dai Aoki, and Etsuji Yamamoto
TL;DR
This study maps the complex magnetic phase diagram of the UCoGe-URhGe-UIrGe system by analyzing single crystals, revealing three distinct magnetic regions based on temperature and interatomic distances.
Contribution
It establishes a detailed magnetic phase diagram for the UCoGe-URhGe-UIrGe system, highlighting the relationship between magnetic ordering and interatomic uranium distances.
Findings
Identified three magnetically ordered regions: ferromagnetic with T_C < T_max, ferromagnetic with T_C = T_max, and antiferromagnetic with T_N < T_max.
Discovered a characteristic maximum in magnetic susceptibility at T_max along the b axis.
Mapped the phase boundaries based on the shortest interatomic uranium distance and temperature.
Abstract
We prepared single crystals in UCo1-xRhxGe and UIr1-xRhxGe systems to establish a complex dU-U-T (dU-U is the shortest interatomic uranium distance and T is temperature) magnetic phase diagram. This recognized a characteristic maximum in magnetic susceptibility at temperature Tmax along the b axis as an important parameter. Three magnetically ordered regions can be distinguished within this scope; first a ferromagnetic region with Curie temperature < Tmax, second a ferromagnetic region with Curie temperature = Tmax and finally an antiferromagnetic region existing on the UIrGe side with N\'eel temperature < Tmax.
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