Thermopower measurement under high pressure using "seesaw heating method"

Hedo, Masato; Nakamura, Dai; Takaesu, Yoshinao; Fujiwara, T.; Uchima, Kiyoharu; Yagasaki, Kazuyuki; Nakama, Takao

doi:10.1088/1742-6596/215/1/012186

Cited by 21 publications

(7 citation statements)

References 11 publications

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“…The measurements of the electrical resistivity ρ and the thermopower S were carried out by the standard four-probe dc method and the differential method with seesaw heating procedure [7], respectively. The piston-cylinder-type high-pressure cell with Daphne 7373 as the pressure transmitting medium was used for the simultaneous measurements of ρ and S at temperatures from 2 to 300 K under hydrostatic pressures up to 2.2 GPa [8]. The electrical current and the heat flow were applied in the same direction of the [111] axis.…”

Section: Methodsmentioning

confidence: 99%

Transport properties of Heusler Compound Mn₃Si under high pressure

Takaesu

Uchima

Nakamura

et al. 2014

J. Phys.: Conf. Ser.

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Section: Methodsmentioning

confidence: 99%

Transport properties of Heusler Compound Mn₃Si under high pressure

Takaesu

Uchima

Nakamura

et al. 2014

J. Phys.: Conf. Ser.

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“…The differential method with the seesaw-heating procedure was used for the thermopower measurement [7]. The electrical resistivity ρ and thermopower S were measured simultaneously in the temperature range from 2 to 300 K. A clamp-type piston-cylinder-pressure-cell was utilized for the measurements of ρ and S under pressures up to 2 GPa [8]. The electrical resistivity ρ under pressures up to 8 GPa was also measured by using a cubic-anvil cell.…”

Section: Methodsmentioning

confidence: 99%

Magnetism and Transport Properties of EuNiSi₃

Uchima

Arakaki

Hirakawa

et al. 2014

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)

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The magnetization M , specific heat C, electrical resistivity ρ and thermopower S of the ternary EuNiSi 3 compound have been measured at temperatures from 2 to 300 K. The high pressure measurements of ρ and S have also been performed. An effective magnetic moment of EuNiSi 3 is estimated as µ eff ≈ 7.5 µ B /Eu, indicating Eu 2+ electron configuration. The anomalous behaviors in M (T), C(T), ρ(T) and S(T) curves are observed at T N ≈ 50 K and T C ≈ 35 K, corresponding to the magnetic phase transitions. An additional anomaly has been observed at T * ≈ 5 K in M (T) and C(T) curves, which might be correspond to the phase transition into the spin freezing state. T C increases rapidly with increasing pressure P. T N also increases with increasing P , and merges with T C at P ≈ 2.5 GPa. The temperature dependences of ρ and S show almost the same features under high pressure, indicating the stable electronic state in the vicinity of the Fermi level.

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“…The thermoelectric power was measured by the seesaw heating method. The electrical resistivity and thermoelectric power measurements under pressure were carried out in a piston-cylinder-type pressure cell [11].…”

Section: Methodsmentioning

confidence: 99%

Heavy Fermion State in EuNi₂P₂ under Pressure

Hiranaka¹,

Nakamura²,

Hedo³

et al. 2014

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)

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EuNi 2 P 2 is known as a heavy fermion compound with an electronic specific heat coefficient γ = 100 mJ/(K 2 •mol). This heavy fermion state is based on the Kondo effect as in CeRu 2 Si 2 , revealing an intensive shrinkage of the volume below 100 K in the temperature dependence of thermal expansion. We carried out the pressure experiments. The √ A value of the Fermi liquid relation in the electrical resistivity ρ = ρ 0 + AT 2 and the low-temperature thermoelectric power S in the form of S /T are found to decrease appreciably in magnitude with increasing pressure up to 2.3 GPa. An electronic state at ambient pressure, which belongs to the generalized Kadowaki-Woods plot with N = 4, is changed into a new electric state with N = 2 as a function of pressure.

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Thermopower measurement under high pressure using "seesaw heating method"

Cited by 21 publications

References 11 publications

Transport properties of Heusler Compound Mn₃Si under high pressure

Transport properties of Heusler Compound Mn₃Si under high pressure

Magnetism and Transport Properties of EuNiSi₃

Heavy Fermion State in EuNi₂P₂ under Pressure

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Thermopower measurement under high pressure using "seesaw heating method"

Cited by 21 publications

References 11 publications

Transport properties of Heusler Compound Mn3Si under high pressure

Transport properties of Heusler Compound Mn3Si under high pressure

Magnetism and Transport Properties of EuNiSi3

Heavy Fermion State in EuNi2P2 under Pressure

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Product

Resources

About

Transport properties of Heusler Compound Mn₃Si under high pressure

Transport properties of Heusler Compound Mn₃Si under high pressure

Magnetism and Transport Properties of EuNiSi₃

Heavy Fermion State in EuNi₂P₂ under Pressure