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Heat capacity of CeIrSi3 under pressure |
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| Authors: | Fumiaki Tomioka Masato Hedo Yoshiya Uwatoko Yusuke Okuda Yoshichika ōnuki |
| Affiliation: | a National Institute for Materials Science, Tsukuba 305-0047, Japan b Faculty of Science, University of the Ryukyus, Okinawa 903-0213, Japan c Division of Physics, Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan d Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan e Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan |
| Abstract: | We measured the heat capacity of CeIrSi3 (100 mK<T<6 K) under high pressure up to P=1.38 GPa. The measurements have been used a quasiadiabatic method utilizing a CuBe piston-cylinder pressure cell in a dilution refrigerator. At 0 GPa, a sharp anomaly which indicates the antiferromagnetically transition is observed at TN=5 K. TN decreases monotonically with increasing pressure up to P=1.38 GPa. The magnetic entropy is released below TN only 19% of R ln 2 at 0 GPa. And the magnetic entropy decreases with increasing pressure up to 1.38 GPa, 64% compared to that at 0 GPa. |
| Keywords: | C. High pressure |
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