TY - JOUR
T1 - Characteristic magnetic phase diagram in heavy-fermion compound YbCo 2Zn20
AU - Takeuchi, T.
AU - Yoshiuchi, S.
AU - Ohya, M.
AU - Matsushita, M.
AU - Yasui, S.
AU - Hirose, Y.
AU - Sugiyama, K.
AU - Honda, F.
AU - Settai, R.
AU - Onuki, Y.
PY - 2012
Y1 - 2012
N2 - We studied the magnetic field versus temperature phase diagram of the heavy-fermion compound YbCo2Zn20 with the cubic CeCr2Al20-type structure by measuring the specific heat, ac-susceptibility, and electrical resistivity under magnetic fields. In a low magnetic field region, a metamagnetic behavior was observed at Hm 6 kOe for three principal field directions below Tχmax 0.32 K, at which the temperature dependence of ac-susceptibility shows a local broad maximum. Two crossover lines were found below and above Hm. At high magnetic fields, the heavy-fermion state was rapidly suppressed with increasing magnetic field, and the field-induced ordered phase appeared in a very limited field direction around H || 111 above the transition field HQ= 60 kOe in the temperature range below TQ = 0.6 K.
AB - We studied the magnetic field versus temperature phase diagram of the heavy-fermion compound YbCo2Zn20 with the cubic CeCr2Al20-type structure by measuring the specific heat, ac-susceptibility, and electrical resistivity under magnetic fields. In a low magnetic field region, a metamagnetic behavior was observed at Hm 6 kOe for three principal field directions below Tχmax 0.32 K, at which the temperature dependence of ac-susceptibility shows a local broad maximum. Two crossover lines were found below and above Hm. At high magnetic fields, the heavy-fermion state was rapidly suppressed with increasing magnetic field, and the field-induced ordered phase appeared in a very limited field direction around H || 111 above the transition field HQ= 60 kOe in the temperature range below TQ = 0.6 K.
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U2 - 10.1088/1742-6596/391/1/012072
DO - 10.1088/1742-6596/391/1/012072
M3 - Conference article
AN - SCOPUS:84874926145
VL - 391
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012072
T2 - International Conference on Strongly Correlated Electron Systems, SCES 2011
Y2 - 29 August 2011 through 3 September 2011
ER -