Abstract
The tetrahedrite Cu12Sb4S13 has a cubic structure above 100 K and is paid attention as thermoelectric materials. At 85 K, a metal-semiconductor phase transition is reported by the electrical resistivity and magnetic susceptibility measurements. The origin of the phase transition is not determined yet. To investigate the phase transition at 85 K, we measured elastic modulus using an ultrasonic technique on polycrystalline samples. The longitudinal modulus shows elastic softening from above 300 K, suggesting that there is an instability of the structure or the electronic state. The softening continues down to 85 K, and it turns into increase below 85 K accompanied by hysteresis. The phase transition is of the first-order. The elastic hardening indicates disappearance of the instability by the phase transition.
| Original language | English |
|---|---|
| Pages (from-to) | 443-446 |
| Number of pages | 4 |
| Journal | Physics Procedia |
| Volume | 75 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
| Externally published | Yes |
| Event | 20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain Duration: Jul 5 2015 → Jul 10 2015 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Elastic Softening in the Tetrahedrite Cu12Sb4S13. / Suzuki, Takashi; Goto, Hiroki; Ishii, Isao; Noguchi, Yoshihito; Kamikawa, Shuhei; Suekuni, Koichiro; Tanaka, Hiromi I.; Takabatake, Toshiro.
In: Physics Procedia, Vol. 75, 01.01.2015, p. 443-446.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Elastic Softening in the Tetrahedrite Cu12Sb4S13
AU - Suzuki, Takashi
AU - Goto, Hiroki
AU - Ishii, Isao
AU - Noguchi, Yoshihito
AU - Kamikawa, Shuhei
AU - Suekuni, Koichiro
AU - Tanaka, Hiromi I.
AU - Takabatake, Toshiro
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The tetrahedrite Cu12Sb4S13 has a cubic structure above 100 K and is paid attention as thermoelectric materials. At 85 K, a metal-semiconductor phase transition is reported by the electrical resistivity and magnetic susceptibility measurements. The origin of the phase transition is not determined yet. To investigate the phase transition at 85 K, we measured elastic modulus using an ultrasonic technique on polycrystalline samples. The longitudinal modulus shows elastic softening from above 300 K, suggesting that there is an instability of the structure or the electronic state. The softening continues down to 85 K, and it turns into increase below 85 K accompanied by hysteresis. The phase transition is of the first-order. The elastic hardening indicates disappearance of the instability by the phase transition.
AB - The tetrahedrite Cu12Sb4S13 has a cubic structure above 100 K and is paid attention as thermoelectric materials. At 85 K, a metal-semiconductor phase transition is reported by the electrical resistivity and magnetic susceptibility measurements. The origin of the phase transition is not determined yet. To investigate the phase transition at 85 K, we measured elastic modulus using an ultrasonic technique on polycrystalline samples. The longitudinal modulus shows elastic softening from above 300 K, suggesting that there is an instability of the structure or the electronic state. The softening continues down to 85 K, and it turns into increase below 85 K accompanied by hysteresis. The phase transition is of the first-order. The elastic hardening indicates disappearance of the instability by the phase transition.
UR - http://www.scopus.com/inward/record.url?scp=84974705194&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84974705194&partnerID=8YFLogxK
U2 - 10.1016/j.phpro.2015.12.054
DO - 10.1016/j.phpro.2015.12.054
M3 - Conference article
AN - SCOPUS:84974705194
VL - 75
SP - 443
EP - 446
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3892
ER -