Electron Transport in Single Crystals of Niobium Dioxide

1974 ◽  
Vol 52 (22) ◽  
pp. 2272-2280 ◽  
Author(s):  
G. Bélanger ◽  
J. Destry ◽  
G. Perluzzo ◽  
P. M. Raccah
Keyword(s):  
Electron Transport ◽  
Single Crystals ◽  
Thermoelectric Power ◽  
Lattice Distortion ◽  
Small Polaron ◽  
Metallic State ◽  
Polaron Model ◽  
Distortion Model ◽  
Niobium Dioxide ◽  
Power Measurements

We have made measurements of the Hall effect and resistivity as well as of thermoelectric power in the temperature range 300–450 K. The results of these measurements are interpreted in terms of a small polaron model of conduction. Additionally, our resistivity and thermoelectric power measurements were extended to 1200 K in an attempt to elucidate the nature of the transition in conductivity occurring in the range 1071–1103 K. For the c direction, this transition appears to be from a semiconducting to a metallic state and a possible explanation for this is given in terms of a lattice distortion model.

ELECTRICAL TRANSPORT PROPERTIES OF C60 SINGLE CRYSTALS DOPED WITH ALKALI METALS

1993 ◽  
Vol 07 (18) ◽  
pp. 1173-1192 ◽  
Author(s):  
HIRONORI OGATA ◽  
YUSEI MARUYAMA ◽  
TAMOTSU INABE ◽  
YOHJI ACHIBA ◽  
SINZO SUZUKI ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Single Crystals ◽  
Thermoelectric Power ◽  
Fermi Energy ◽  
Electrical Transport ◽  
Alkali Metals ◽  
Power Measurement ◽  
Electrical Transport Properties ◽  
Linear Temperature ◽  
Power Measurements

Electronic structures of various kinds of alkali metal (Na, K, Rb or Cs)-doped C 60 solids are studied by electrical resistivity and thermoelectric power measurements by using C 60 single crystals prepared from a CS 2 solution as a starting material. For K-or Rb-doped C 60, metallic conducting behaviors in the normal conducting state and relatively sharp superconducting transitions are observed by the electrical resistivity measurements. Nearly linear-temperature dependences with the negative sign are observed in the thermoelectric power measurements at the normal conducting states for K-or Rb-doped C 60. From electron diffusion term of the thermoelectric power, the values of Fermi energy and the density of states at the Fermi energy are estimated by assuming the three-dimensional free electron model, which are in substantial agreement with the results of other experiments and calculations. "Metal–semiconductor transition" is observed in both the electrical resistivity and the thermoelectric power measurements for Na-doped C 60. Existence of metallic phase is confirmed by the thermoelectric power measurement in Cs-doped C 60.

scholarly journals Oxygen vacancy doping of hematite analyzed by electrical conductivity and thermoelectric power measurements

2017 ◽  
Vol 1 (6) ◽  
Author(s):  
Jan Mock ◽  
Benjamin Klingebiel ◽  
Florian Köhler ◽  
Maurice Nuys ◽  
Jan Flohre ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Oxygen Vacancy ◽  
Thermoelectric Power ◽  
Power Measurements ◽  
Vacancy Doping

Thermoelectric Power Measurements of xSb-(60-x)V2O5-40TeO2 Glasses

2015 ◽  
Vol 45 (1) ◽  
pp. 307-311 ◽  
Author(s):  
Dariush Souri ◽  
Zahra Siahkali ◽  
Mohammad Moradi
Keyword(s):  
Thermoelectric Power ◽  
Power Measurements

Thermoelectric power measurements in Fe doped La0.65Ca0.35MnO3

2002 ◽  
Vol 14 (43) ◽  
pp. 10305-10316 ◽  
Author(s):  
Affia Aslam ◽  
S K Hasanain ◽  
M Zubair ◽  
M J Akhtar ◽  
M Nadeem
Keyword(s):  
Thermoelectric Power ◽  
Power Measurements

scholarly journals Application of thermoelectric power measurements to the study of cold rolled austenitic stainless steels

2009 ◽  
Vol 44 (16) ◽  
pp. 4499-4502 ◽  
Author(s):  
C. Capdevila ◽  
T. De Cock ◽  
F. G. Caballero ◽  
D. San Martin ◽  
C. Garcia de Andres
Keyword(s):  
Thermoelectric Power ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Cold Rolled ◽  
Power Measurements
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