TY - JOUR
T1 - Pressure effect on valence fluctuation and magnetic ordering in YbPd
AU - Mitsuda, A.
AU - Yamada, K.
AU - Sugishima, M.
AU - Wada, H.
N1 - Funding Information:
This work was partly supported by Research Foundation for the Electrotechnology of Chubu. The authors thank Prof. H. Harima and Prof. Yuh Yamada for useful comments and suggestions.
PY - 2009/10/15
Y1 - 2009/10/15
N2 - The cubic CsCl type compound YbPd is known to be a valence fluctuating compound and to undergo four phase transitions at 0.5, 1.9, 105 and 125 K. In the present study, we focus on pressure effect on the transitions. The transitions at T1 = 105 K and T2 = 125 K, which are accompanied by thermal hysteresis, are of first order. With increasing pressure, the transitions shift toward lower temperature direction. The transition at T1 satisfies the Clausius-Clapeyron's relation, which also supports the first-order transition. T1 disappears at around 1.5 GPa. Above 1.5 GPa, some new ground state would be realized. We can observe an anomaly at 2.8 K which would be associated with magnetic ordering at 1.9 K. The anomaly becomes more distinct with pressure. Since applying pressure stabilizes magnetic Yb3 +, the magnetic ordering becomes more conspicuous.
AB - The cubic CsCl type compound YbPd is known to be a valence fluctuating compound and to undergo four phase transitions at 0.5, 1.9, 105 and 125 K. In the present study, we focus on pressure effect on the transitions. The transitions at T1 = 105 K and T2 = 125 K, which are accompanied by thermal hysteresis, are of first order. With increasing pressure, the transitions shift toward lower temperature direction. The transition at T1 satisfies the Clausius-Clapeyron's relation, which also supports the first-order transition. T1 disappears at around 1.5 GPa. Above 1.5 GPa, some new ground state would be realized. We can observe an anomaly at 2.8 K which would be associated with magnetic ordering at 1.9 K. The anomaly becomes more distinct with pressure. Since applying pressure stabilizes magnetic Yb3 +, the magnetic ordering becomes more conspicuous.
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U2 - 10.1016/j.physb.2009.07.029
DO - 10.1016/j.physb.2009.07.029
M3 - Article
AN - SCOPUS:70349090115
VL - 404
SP - 3002
EP - 3004
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 19
ER -