TY - JOUR
T1 - Characteristic physical properties of the non-Kramers Γ3 ground state in PrPt2Cd20
AU - Hirose, Yusuke
AU - Takeuchi, Tetsuya
AU - Doto, Hiroshi
AU - Honda, Fuminori
AU - Miyake, Atsushi
AU - Tokunaga, Masashi
AU - Yoshizawa, Daichi
AU - Kida, Takanori
AU - Hagiwara, Masayuki
AU - Haga, Yoshinori
AU - Settai, Rikio
N1 - Funding Information:
This research was carried out at the Institute for Solid State Physics, The University of Tokyo, and the Center for Advanced High Magnetic Field Science, Osaka University under the Visiting Researcher’s Program of the ISSP, The University of Tokyo. This work was also carried out under the Joint-Research Program of the International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University. This work was supported by JSPS KAKENHI Grant Numbers JP15H05882, JP15K05156, and JP15H05852.
Publisher Copyright:
©2017 The Physical Society of Japan.
PY - 2017/7/15
Y1 - 2017/7/15
N2 - The 4 f crystalline electric field (CEF) of the Pr 3+ ion of PrPt2Cd20 with a cubic crystal structure has been studied by measuring its high-field magnetization up to 45 T, specific heat in a wide temperature range in magnetic fields, and electrical resistivity. Magnetization curves for the magnetic field along the [100] and [110] directions show metamagnetic-like features at approximately 1.5 and 15 T, respectively. The specific heat shows a Schottky peak centered at 2.4 K. These experimental results were explained well by the CEF scheme with the non-Kramers Γ3 doublet ground state with a small overall CEF splitting energy of about 40 K. The specific heat also shows another broad peak below 1 K with an associated entropy release of R ln 2. This peak was interpreted by a split of the Γ3 doublet ground state with an energy of Δ = 0.4 K. These results suggest that the local symmetry of the Pr site is lowered from a cubic one. The possible reasons for this symmetry lowering are discussed.
AB - The 4 f crystalline electric field (CEF) of the Pr 3+ ion of PrPt2Cd20 with a cubic crystal structure has been studied by measuring its high-field magnetization up to 45 T, specific heat in a wide temperature range in magnetic fields, and electrical resistivity. Magnetization curves for the magnetic field along the [100] and [110] directions show metamagnetic-like features at approximately 1.5 and 15 T, respectively. The specific heat shows a Schottky peak centered at 2.4 K. These experimental results were explained well by the CEF scheme with the non-Kramers Γ3 doublet ground state with a small overall CEF splitting energy of about 40 K. The specific heat also shows another broad peak below 1 K with an associated entropy release of R ln 2. This peak was interpreted by a split of the Γ3 doublet ground state with an energy of Δ = 0.4 K. These results suggest that the local symmetry of the Pr site is lowered from a cubic one. The possible reasons for this symmetry lowering are discussed.
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U2 - 10.7566/JPSJ.86.074711
DO - 10.7566/JPSJ.86.074711
M3 - Article
AN - SCOPUS:85021934024
SN - 0031-9015
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 7
M1 - 074711
ER -