Search results for: J. B. Vaney

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Electrical, Thermal, and Magnetic Characterization of Natural Tetrahedrites–Tennantites of Different Origin

P. Levinsky, J.-B. Vaney, C. Candolfi, A. Dauscher, more

Journal of Electronic Materials > 2016 > 45 > 3 > 1351-1357

Naturally occurring sulfosalt minerals of the tetrahedrite–tennantite series ((Cu,Fe,Zn,Ag,Hg)₁₂(Sb,As)₄S₁₃) are studied because of their potential use as basic components in the manufacture of thermoelectric devices for moderate-temperature applications. In the work reported herein, the chemical, crystallographic, thermoelectric, and magnetic properties of four specimens from different ores from...

article

High Temperature Transport Properties of Tetrahedrite Cu_12−x M _xSb_4−yTe_yS₁₃ (M = Zn, Ni) Compounds

Y. Bouyrie, C. Candolfi, J. B. Vaney, A. Dauscher, more

Journal of Electronic Materials > 2016 > 45 > 3 > 1601-1605

Natural and synthetic tetrahedrites are currently the focus of attention in thermoelectricity due to their abundance, numerous possibilities of substitution, and their complex crystal structure ( $$ I\bar{4}3m $$ I 4 ¯ 3 m ) resulting in extremely low lattice thermal conductivity (below 1 W m⁻¹ K⁻¹ above 300 K). Here, we report on the synthesis, structural and chemical characterizations,...

article

Thermoelectric Properties of the α-As₂Te₃ Crystalline Phase

J.-B. Vaney, J. Carreaud, G. Delaizir, C. Morin, more

Journal of Electronic Materials > 2016 > 45 > 3 > 1447-1452

As₂Te₃ exists in two crystallographic configurations: α- and β-As₂Te₃, of which only the latter crystallizes in the same rhombohedral structure-type as Bi₂Te₃. While β-As₂Te₃ shows interesting thermoelectric (TE) properties which can be adjusted through alloying, the transport properties of the monoclinic phase α-As₂Te₃, more thermodynamically stable than the β-phase at room temperature, has not yet...

article

Low-Temperature Transport Properties of Bi-Substituted β-As₂Te₃ Compounds

J. -B. Vaney, J. Carreaud, G. Delaizir, C. Morin, more

Journal of Electronic Materials > 2016 > 45 > 3 > 1786-1791

β-As₂Te₃ belongs to the family of Bi₂Te₃-based alloys, a well-known class of efficient thermoelectric materials around room temperature. As₂Te₃ exists in two allotropic configurations: α- and β-As₂Te₃, of which only the latter crystallizes in the same rhombohedral structure as Bi₂Te₃. Herein, we report on substitution of Bi for As in the As_2−xBi_xTe₃ system...

article

Transport Properties of Polycrystalline p-type SnSe

S. Sassi, C. Candolfi, J.-B. Vaney, V. Ohorodniichuk, more

Materials Today: Proceedings > 2015 > 2 > 2 > 690-698

We report on the transport properties of polycrystalline p-type SnSe in a broad temperature range (2 – 800K) by means of electrical resistivity, thermopower, thermal conductivity, Hall effect and specific heat. The electrical properties confirm the lightly-doped semiconducting nature of SnSe. The low-temperature specific heat data feature an excess contribution, which originates from the low-energy...

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Keywords

ARSENIC TELLURIDE (2)
THERMOELECTRIC (2)
THERMOELECTRIC MATERIALS (2)
CHALCOGENIDE (1)
CO-DOPING (1)
CRYSTAL STRUCTURE (1)
HIGH- AND LOW-TEMPERATURE THERMOELECTRIC PROPERTIES (1)
MAGNETISM (1)
METASTABLE THERMOELECTRIC PHASE (1)
NATURAL MINERALS (1)
SPARK PLASMA SINTERING (SPS) (1)
SULFOSALTS (1)
TETRAHEDRITE (1)
TETRAHEDRITE–TENNANTITE SERIES (1)
THERMOELECTRIC PROPERTIES (1)
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Search results for: J. B. Vaney

Electrical, Thermal, and Magnetic Characterization of Natural Tetrahedrites–Tennantites of Different Origin

High Temperature Transport Properties of Tetrahedrite Cu12−x M x Sb4−y Te y S13 (M = Zn, Ni) Compounds

Thermoelectric Properties of the α-As2Te3 Crystalline Phase

Low-Temperature Transport Properties of Bi-Substituted β-As2Te3 Compounds

Transport Properties of Polycrystalline p-type SnSe

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High Temperature Transport Properties of Tetrahedrite Cu_12−x M _xSb_4−yTe_yS₁₃ (M = Zn, Ni) Compounds

Thermoelectric Properties of the α-As₂Te₃ Crystalline Phase

Low-Temperature Transport Properties of Bi-Substituted β-As₂Te₃ Compounds