Electrical conductivity variation of (Bi2Te3)0.25(Sb2Te3)0.75crystal grown using the zone melting method

2013 ◽  
Vol 104 (3) ◽  
pp. 314-318 ◽  
Author(s):  
Ghassem Kavei ◽  
Kamran Ahmadi ◽  
Ashkan Kavei
Keyword(s):  
Electrical Conductivity ◽  
Zone Melting ◽  
Melting Method ◽  
Conductivity Variation

Thermoelectric Properties of n-type (Bi2Se3)x(Bi2Te3)1-x Crystals Prepared by Zone Melting

2008 ◽  
Vol 368-372 ◽  
pp. 547-549
Author(s):  
Jun Jiang ◽  
Ya Li Li ◽  
Gao Jie Xu ◽  
Ping Cui ◽  
Li Dong Chen
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Seebeck Coefficient ◽  
Carrier Concentration ◽  
Thermoelectric Properties ◽  
Figure Of Merit ◽  
Zone Melting ◽  
Chemical Compositions ◽  
Melting Method ◽  
Temperature Range

In the present study, n-type (Bi2Se3)x(Bi2Te3)1-x crystals with various chemical compositions were fabricated by the zone melting method. Thermoelectric properties, including Seebeck coefficient (α), electrical conductivity (σ) and thermal conductivity (κ), were measured in the temperature range of 300-500 K. The influence of the variations of Bi2Te3 and Bi2Se3 content on thermoelectric properties was studied. The increase of Bi2Se3 content (x) caused an increase in carrier concentration and thus an increase of σ and a decrease of α. The maximum figure of merit (ZT = α2σT/κ) of 0.87 was obtained at about 325 K for the composition of 93%Bi2Te3-7%Bi2Se3 with doping TeI4.

The Thermoelectric Performance Enhancement of N-Type BiTeSe Alloys by Addition of ZnAlO

2012 ◽  
Vol 512-515 ◽  
pp. 1647-1650
Author(s):  
Ting Zhang ◽  
Jun Jiang ◽  
Sheng Hui Yang ◽  
Yong Biao Zhai ◽  
Gao Jie Xu
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Low Temperature ◽  
Seebeck Coefficient ◽  
Ambient Temperature ◽  
Performance Enhancement ◽  
Zone Melting ◽  
Melting Method ◽  
Intrinsic Excitation

A series of n-type BiTeSe/ZnAlO composites were prepared by zone melting method. Thermoelectric properties, including the electrical conductivity σ, Seebeck coefficient α and thermal conductivity κ, were measured in the temperature range of 300-550K. Results show that the electrical properties have been slightly lowered due to the reduced carrier concentration by ZnAlO addition. However, the low-temperature-shifted peak α, resulting from the prematurely happened intrinsic excitation, have shifted peak ZT to lower temperatures. As a result, the ZT values at 300 K were significantly enhanced for BiTeSe/ZnAlO composites compared to that of BiTeSe, making more attractive for cooling applications at ambient temperature.

scholarly journals Preparation of Bulky Zr-Based Amorphous Alloys by a Zone Melting Method

1994 ◽  
Vol 35 (12) ◽  
pp. 923-926 ◽  
Author(s):  
Akihisa Inoue ◽  
Yoshihiko Yokoyama ◽  
Yoshiyuki Shinohara ◽  
Tsuyoshi Masumoto
Keyword(s):  
Amorphous Alloys ◽  
Zone Melting ◽  
Melting Method

Approach to reduce the residual strain in bulk InGaAs crystals grown by the multi-component zone melting method

2007 ◽  
Vol 4 (4) ◽  
pp. 1415-1418
Author(s):  
M. S. Rahman ◽  
M. R. Islam ◽  
M. S. Alam ◽  
M. Yamada
Keyword(s):  
Residual Strain ◽  
Zone Melting ◽  
Melting Method

Thermoelectric properties of Rh-doped Ru2Si3 prepared by floating zone melting method

2001 ◽  
Vol 294 (1-2) ◽  
pp. 202-205 ◽  
Author(s):  
Yuji Arita ◽  
Satoshi Mitsuda ◽  
Yoshimasa Nishi ◽  
Tsuneo Matsui ◽  
Takanori Nagasaki
Keyword(s):  
Thermoelectric Properties ◽  
Zone Melting ◽  
Floating Zone ◽  
Melting Method

Crystallinity of Recrystallized Si on SiO2, by Zone Melting Method

1983 ◽  
Author(s):  
Kohei Higuchi ◽  
Shuichi Saitoh ◽  
Hidekazu Okabayashi
Keyword(s):  
Zone Melting ◽  
Melting Method
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