TRANSPORT PROPERTIES AND FERMI SURFACES IN HfTe<sub>5</sub>AND ZrTe<sub>5</sub>

Izumi, Mitsuru; Uchinokura, K.; Yoshizaki, Ryozo; Harada, Shigeki; Nakayama, Tomonobu; Yamada, Atsuo; Matsuura, Etsuyuki

doi:10.1051/jphyscol/1983094

Cited by 6 publications

(3 citation statements)

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“…The anomalies are also reflected in magnetic susceptibility (15,16,(21)(22)(23) and detected by timedependent perturbed angular correlation (TDPAC) measurements (24,25). However, the anomalies could not be confirmed by Raman spectroscopy (10,21,(26)(27)(28), powder X-ray and neutron diffraction (8), or experimental (22,29) or theoretical (30,31) studies of electronic band structure. The only structural manifestation of the anomalies is recorded by Skelton et al (17) who reported maxima in the intensity of some very weak additional reflections [forbidden in the space group assigned to the Hffe5-type structure 7] at the temperatures concerned.…”

Section: Introductionmentioning

confidence: 98%

“…In fact the anomalies manifest themselves in the various electrical transport properties [viz., in the temperature dependencies of dc and ac resistance, Hall coefficients, and thermoelectric power (Z2- 20)]. The anomalies are also reflected in magnetic susceptibility (15,16,(21)(22)(23) and detected by timedependent perturbed angular correlation (TDPAC) measurements (24,25). However, the anomalies could not be confirmed by Raman spectroscopy (10,21,(26)(27)(28), powder X-ray and neutron diffraction (8), or experimental (22,29) or theoretical (30,31) studies of electronic band structure.…”

Section: Introductionmentioning

confidence: 99%

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ZrTe5 and HfTe5: The heat capacity and derived thermophysical properties from 6 to 350 K

Shaviv

Westrum

Fjellvåg

et al. 1989

Journal of Solid State Chemistry

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The heat capacities of ZrTeS and HffeS have been measured by adiabatic shield calorimetry from 6 to 350 K on samples carefully shielded to minimize the contact between the sample and oxygen during all stages of preparation and measurements. Since ZrTeS and HffeS are isostructural and their molecular volumes are almost identical, the small differences between their heat capacities are due essentially solely to mass effects. There is absolutely no indication of any excess contribution to the heat capacities of these compounds below 350 K. The effective thermodynamic dimension of ZrTeS and Hffel, is estimated to be between one and two.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

ZrTe5 and HfTe5: The heat capacity and derived thermophysical properties from 6 to 350 K

Shaviv

Westrum

Fjellvåg

et al. 1989

Journal of Solid State Chemistry

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“…The thermoelectric power and the electrical resistance were measured over the temperature range of 7 to 380 K by Jones et al in 1982 [22]. Izumi et al [23] determined the transport properties and Fermi surfaces by Shubnikov-de Haas oscillation measurement. The heat capacity and derived thermophysical properties of HfTe 5 from 6 to 350 K were reported experimentally by Shaviv et al in 1989 [24].…”

Section: Introductionmentioning

confidence: 99%

High thermoelectric figure of merit and thermopower of HfTe₅ at room temperature

Kang

Yang

Wang

et al. 2020

J. Phys.: Condens. Matter

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We predict a high thermoelectric ef ciency of HfTe 5 , based on the rst-principles calculations of the electronic structure and thermal conductivity, and the transport coef cients obtained by using the semi-classical Boltzmann transport theory in a wide temperature and carrier concentration range. The lattice thermal conductivity is calculated based on the Slack model and the result is in good agreement with the experimental value. The results of all the thermoelectric transport coef cients demonstrate anisotropic characteristics with the obvious small values along with the b direction. The gure of merit ZT computed with a temperature-dependent relaxation time can reach 2.68 along with the c direction of the n-type HfTe 5 at 300 K and an optimal carrier concentration of 5.80 × 10 19 cm −3 . The Seebeck thermopower coef cients are between 100 and 300 µV K −1 at the optimal carrier concentration, but can reach nearly 1000 µV K −1 at low concentration. Therefore, HfTe 5 could achieve high thermoelectric performance at room temperature by controlling the transport direction and carrier concentration.

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Structural properties of ZrTe5 and HfTe5 as seen by powder diffraction

Fjellvåg

Kjekshus

1986

Solid State Communications

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TRANSPORT PROPERTIES AND FERMI SURFACES IN HfTe₅AND ZrTe₅

Cited by 6 publications

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ZrTe5 and HfTe5: The heat capacity and derived thermophysical properties from 6 to 350 K

ZrTe5 and HfTe5: The heat capacity and derived thermophysical properties from 6 to 350 K

High thermoelectric figure of merit and thermopower of HfTe₅ at room temperature

Structural properties of ZrTe5 and HfTe5 as seen by powder diffraction

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TRANSPORT PROPERTIES AND FERMI SURFACES IN HfTe5AND ZrTe5

Cited by 6 publications

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ZrTe5 and HfTe5: The heat capacity and derived thermophysical properties from 6 to 350 K

ZrTe5 and HfTe5: The heat capacity and derived thermophysical properties from 6 to 350 K

High thermoelectric figure of merit and thermopower of HfTe5 at room temperature

Structural properties of ZrTe5 and HfTe5 as seen by powder diffraction

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Product

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TRANSPORT PROPERTIES AND FERMI SURFACES IN HfTe₅AND ZrTe₅

High thermoelectric figure of merit and thermopower of HfTe₅ at room temperature