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【期刊论文】Investigation of the off-diagonal Seebeck effect and Peltier effect on textured YBaz Cu3 O7-δ*
何振辉, Z.H. He a, F.Q. Zhonga, y.y. Luoa, M. Wub, W. Gavalekb, K.F. LiangC, and P.C.W. Fungc
Physica C 282-287 (1997) 1247-1248,-0001,():
-1年11月30日
Both of the off-diagonal Seebeck effect and the off-diagonal Peltier effect were investigated with the use of the same textured sample YBa2 Cu3 07-δ (Y-123) and the same experimental setup. The reliability of the measurement is studied by applying different heat-conductive mediums. The flatness of both of the sample and the heat-conducting block, and the matching between them are found very important for the reduction of the heat resistance. The annealing effect on the S is also studied and found in accordance with that studied by the thermoelectric power.
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何振辉, Z HHe, Q D Su, Y Y Luo, M Zeisberger and W Gawalek
Supercond. Sci. Technol. 15 (2002) 222-225,-0001,():
-1年11月30日
The Ca-doped YBa2Cu3O7−δ/Y2BaCuO5 bulk-textured superconductors were prepared by using the top-seeding melt-textured growth process. Composition analyses were made for such prepared samples. We found that Ca concentration in the YBa2Cu3O7−δ grains decreased along the growing direction; Ca preferred to substitute Y in the YBa2Cu3O7−δ grains, rather than to stay at the grain boundary. The accumulation of extra CuO at the growth front was considered as one of the causes of the inhomogeneous distribution of Ca.
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