Tunning of microstructure and thermoelectric properties of Ca3Co4O9 ceramics by high-magnetic-field sintering

2011 ◽  
Vol 110 (12) ◽  
pp. 123713 ◽  
Author(s):  
Yanan Huang ◽  
Bangchuan Zhao ◽  
Jun Fang ◽  
Ran Ang ◽  
Yuping Sun
Keyword(s):  
Magnetic Field ◽  
Thermoelectric Properties ◽  
High Magnetic Field

Fabrication of c-axis oriented higher manganese silicide by a high-magnetic-field and its thermoelectric properties

2007 ◽  
Vol 22 (10) ◽  
pp. 2917-2923 ◽  
Author(s):  
Hisashi Kaga ◽  
Yoshiaki Kinemuchi ◽  
Koji Watari ◽  
Satoshi Tanaka ◽  
Atsushi Makiya ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thermoelectric Properties ◽  
High Magnetic Field ◽  
Secondary Phase ◽  
Second Phase ◽  
Easy Magnetization ◽  
Higher Manganese Silicide ◽  
Plasma Sintering ◽  
Degree Of Orientation ◽  
Manganese Silicide

We report the preparation and thermoelectric properties of oriented higher manganese silicide (HMS) with a composition of MnSi1.73 bulk. The grain alignment and densification were achieved by rotating high magnetic field and spark plasma sintering (SPS) techniques, respectively. The easy magnetization axis of MnSi1.73 was found to be c-axis, and the applied magnetic field of 2 T was strong enough to rotate the powder with a mean grain size of 1 μm. The c-axis of grains was oriented when applying the magnetic field, and the degree of orientation was further increased after heat treatment. However, a secondary phase that was mono manganese silicide (MnSi) was observed as a result of oxidation on the surface of synthesized powder. The electrical conductivity of the c-axis oriented specimen along the ab-plane was about 40% larger than that for sample processed only by SPS, while the Seebeck coefficient of oriented and nonoriented specimens showed similar values regardless of existence of the second phase. Consequently, the power factor of the c-axis oriented specimen along the ab-plane was enhanced by about 35% compared to the nonoriented one. The proposed approach is found to be very effective not only in obtaining the oriented materials with nonductility but also in enhancing the thermoelectricity.

Structure and thermoelectric properties of Al-doped ZnO films prepared by thermal oxidization under high magnetic field

2017 ◽  
Vol 104 ◽  
pp. 282-290 ◽  
Author(s):  
Shiying Liu ◽  
Sunjuan Peng ◽  
Jun Ma ◽  
Guojian Li ◽  
Xuesi Qin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thermoelectric Properties ◽  
High Magnetic Field ◽  
Zno Films ◽  
Doped Zno

scholarly journals Fabrication of c-axis Oriented Zn0.98Al0.02O by a High-Magnetic-Field via Gelcasting and its Thermoelectric Properties

2006 ◽  
Vol 114 (1335) ◽  
pp. 1085-1088 ◽  
Author(s):  
Hisashi KAGA ◽  
Yoshiaki KINEMUCHI ◽  
Satoshi TANAKA ◽  
Atsushi MAKIYA ◽  
Zenji KATO ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thermoelectric Properties ◽  
High Magnetic Field

Fabrication and thermoelectric properties of c-axis-aligned Bi0.5Sb1.5Te3 with a high magnetic field

2011 ◽  
Vol 59 (12) ◽  
pp. 4957-4963 ◽  
Author(s):  
Dong Hwan Kim ◽  
Cham Kim ◽  
Koo-Chul Je ◽  
Gook Hyun Ha ◽  
Hoyoung Kim
Keyword(s):  
Magnetic Field ◽  
Thermoelectric Properties ◽  
High Magnetic Field

Hydrogen-like excitons in a high magnetic field

2000 ◽  
Vol 10 (PR5) ◽  
pp. Pr5-311-Pr5-314
Author(s):  
M. A. Liberman
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field
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