TY - JOUR
T1 - Anomalous ferromagnetic ordering in EuCuP
AU - Iha, Wataru
AU - Kakihana, Masashi
AU - Matsuda, Shinya
AU - Honda, Fuminori
AU - Haga, Yoshinori
AU - Takeuchi, Tetsuya
AU - Nakashima, Miho
AU - Amako, Yasushi
AU - Gouchi, Jun
AU - Uwatoko, Yoshiya
AU - Hedo, Masato
AU - Nakama, Takao
AU - Ōnuki, Yoshichika
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers JP16H01078 , JP17K05547 , JP16K05453 , JP15H05884 .
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/6/5
Y1 - 2019/6/5
N2 - We succeeded in growing single crystals of EuCuP with the hexagonal structure by the Sn-flux method and measured the electrical resistivity, specific heat, magnetic susceptibility, magnetization, thermal expansion, and Hall effect, together with the electrical resistivity under pressure and magnetic field. EuCuP is a ferromagnet with a Curie temperature TC=32 K, following a divalent electronic state, although the temperature dependence of the electrical resistivity is not simple but possesses a sharp and distinct peak at TC. The Curie temperature is found to increase continuously with increasing pressure P, with a large rate of dTC/dP=5.7 K/GPa up to 8 GPa. This means that the divalent electronic state is stable up to 8 GPa. The present resistivity peak at TC is, however, extremely suppressed by magnetic field, and is found to be characteristic in a ferromagnet with a small number of carriers, which was confirmed from a measurement of the Hall effect.
AB - We succeeded in growing single crystals of EuCuP with the hexagonal structure by the Sn-flux method and measured the electrical resistivity, specific heat, magnetic susceptibility, magnetization, thermal expansion, and Hall effect, together with the electrical resistivity under pressure and magnetic field. EuCuP is a ferromagnet with a Curie temperature TC=32 K, following a divalent electronic state, although the temperature dependence of the electrical resistivity is not simple but possesses a sharp and distinct peak at TC. The Curie temperature is found to increase continuously with increasing pressure P, with a large rate of dTC/dP=5.7 K/GPa up to 8 GPa. This means that the divalent electronic state is stable up to 8 GPa. The present resistivity peak at TC is, however, extremely suppressed by magnetic field, and is found to be characteristic in a ferromagnet with a small number of carriers, which was confirmed from a measurement of the Hall effect.
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U2 - 10.1016/j.jallcom.2019.02.213
DO - 10.1016/j.jallcom.2019.02.213
M3 - Article
AN - SCOPUS:85062148861
SN - 0925-8388
VL - 788
SP - 361
EP - 366
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -