Search Results - "Ruan, KQ"

High transport critical current in MgB2/Fe wire by in situ powder-in-tube process by Fu, B.Q., Feng, Y., Yan, G., Liu, C.F., Zhou, L., Cao, L.Z., Ruan, K.Q., Li, X.G.

“…MgB2/Fe wires and MgB2/Ta/Cu wires were prepared through the in situ powder-in-tube method by using Mg and B powders at ambient pressure. The phase…”
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Superconducting properties of MgB2 wires and tapes with different metal sheaths by Feng, Y., Yan, G., Zhao, Y., Liu, C.F., Fu, B.Q., Zhou, L., Cao, L.Z., Ruan, K.Q., Li, X.G., Shi, L., Zhang, Y.H.

“…We have successfully fabricated mono- and multifilamentary MgB2 wires and tapes with different sheathed metals such as Cu, Ta, NbZr and Fe by the…”
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Upper critical field and the effect of Li doping on the activation energy in MgB2 by Li, H.L., Ruan, K.Q., Li, S.Y., Yu, Y., Wang, C.Y., Cao, L.Z.

“…MgB2 and Mg0.93Li0.07B2 superconductors have been prepared by solid-state reaction. The temperature dependence of electrical resistivity in MgB2 and…”
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Transport properties at the insulator–superconductor phase boundary of La2−xSrxCuO4 thin films by Wagner, P., Ruan, K.-Q., Gordon, I., Vanacken, J., Moshchalkov, V.V., Bruynseraede, Y.

“…The longitudinal resistivity and transverse Hall resistivity of La1.94Sr0.06CuO4 and La1.97Sr0.03CuO4 epitaxial thin films are investigated. Zero-field…”
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The comparable effects on transport properties in Bi2Sr2Ca1−xPrxCu2Oy and Bi2Sr2Ca1−xYxCu2Oy single crystals by Cao, Q, Ruan, K.Q, Li, S.Y, Chen, X.H, Qian, G.G, Cao, L.Z

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Critical current of Bi2223 superconducting tape and extended exponential model by Hu, Lifa, Zhang, Pingxiang, Wang, Jinrong, Teng, Xinkang, Li, Chengshan, Feng, Yong, Zhou, Lian, Sulpice, A., Mossonge, E., Cao, Liezhao, Ruan, Keqing, Li, Xiaoguang

“…We have measured J c( B, T) mainly at 4.2 and 77 K under perpendicular external fields and parallel ones. The results make it possible to elucidate the…”
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Transport critical current density of Fe sheath MgB2 tapes sintered at different temperatures by Ruan, K.Q., Li, H.L., Yu, Y., Wang, C.Y., Cao, L.Z., Liu, C.F., Du, S.J., Yan, G., Feng, Y., Wu, X., Wang, J.R., Liu, X.H., Zhang, P.X., Wu, X.Z., Zhou, L.

“…Fe sheath MgB2 tapes sintered at 650, 750, 850 and 950DGC, respectively, for 2 h in a high purity argon gas were prepared using the powder-in-tube method…”
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The detailed transport property of the underdoped Bi-2212 system in the pseudogap state by Ruan, K.Q., Cao, Q., Li, S.Y., Qian, G.G., Wang, C.Y., Chen, X.H., Cao, L.Z.

“…The detailed character of transport properties in underdoped Bi-2212 systems are analysed in the pseudogap state. In a certain underdoped regime, in-plane…”
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Physical Properties of La0.85K0.15MnO3 in Magnetic Field by Wang, K.Q., Wang, Y.X., Junod, A., Ruan, K.Q., Qian, G.G., Yu, M., Cao, L.Z.

“…We have measured the specific heat, resistance and dc susceptibility of the mixed valence manganite La0.85K0.15MnO3 as a function of temperature. The sample…”
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Evidence of the spin gap in Bi2Sr2Ca1−xYxCu2Oy single crystals by Ruan, K.Q., Feng, Y., Wang, C.Y., Chen, X.H., Cao, L.Z.

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Anisotropy in doped single crystal Bi2Sr2CaCu2O8+δ by Chen, X.H., Li, S.Y., Ruan, K.Q., Sun, Z., Xiong, Y.M., Cao, Q., Cao, L.Z.

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The electronic structure and transport properties of Bi2Sr2−xLaxCaCu2Oy (x=0.0–0.8) by Qian, G.G., Ruan, K.Q., Chen, X.H., Wang, C.Y., Cao, L.Z., Ji, M.R.

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Nanocrystalline-grained Bi-Sr-Ca-Cu-O and its superconducting property by Zhao, Weichang, Jin, Hua, Tian, Mingliang, Ruan, Keqing, Yang, Li, Cao, Liezhao

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Raman-active phonons in Bi2Sr2−xLaxCaCu2Oy: effect of the oxygen content induced by La doping by Qian, G.G., Chen, X.H., Ruan, K.Q., Li, S.Y., Cao, Q., Wang, C.Y., Cao, L.Z., Yu, M.

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The role of temperature gradient in the growth of Bi-system whiskers by Zhou, Y.Q., Jin, H., Ruan, K.Q., Zheng, P., Chen, Z.J., Cao, L.Z.

“…This is the first report that an appropriate temperature gradient plays a catalytic role in the growth of Bi-system whiskers. Bi-system whiskers are grown out…”
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Annealing dependence of the superconductivity of Pb0.65Sr2.35Y0.5Ca0.5Cu2Oy by JIN, H, RUAN, K. Q, ZHOU, L, WANG, L. B, QIU, Y. M, WANG, C. Y, ZHOU, Y. Q, CUI, X. D, CAO, L. Z, CHEN, Z. J, ZHANG, Y. H

“…The effect of annealing conditions on the superconductivity of the Pb-based 1 2 1 2 phase Pb0.65Sr2.35Y0.5Ca0.5Cu2Oy system was studied. The weight change of…”
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Evidence of the spin gap in Hg0.9Tl0.1Ba2Ca2Cu3O8+δ by Feng, Y., Ruan, K.Q., Wang, K.Q., Wang, C.Y., Cao, L.Z., Xu, Q.L., Foong, F., Bedard, B., Liou, S.H.

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Correlation of grain size and ac susceptibility in the Bi2Sr2CaCu2O8 system by Jin, H., Zhao, W.C., Lou, F.M., Zhang, K., Ruan, K.Q., Wang, C.Y., Liu, Q.M., Cao, L.Z., Zhang, Y.H., Chen, Z.J., Hu, Z.Q.

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Superconductivity of nanostructured Bi Sr Ca Cu O materials by Zhao, W.C., Jin, H., Tian, M.L., Zhang, K., Lou, F.M., Tian, Y.C., Ruan, K.Q., Wang, C.Y., Cao, L.Z., Zhang, Y.H.

“…Nanostructured Bi Sr Ca Cu O oxide ceramics were prepared from amorphous state with the composition of Bi 2Sr 2CaCu 2O 8. The resistance-temperature characters…”
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Anomalies induced by calcium doping in NdCeCuO system by Chen, X.H., Li, T.F., Wang, R.P., Qiu, Y.M., Ruan, K.Q., Cao, L.Z., Shi, L., Jia, Y.B., Zhou, G.E., Zhang, Y.H.

“…Ca doping into either the superconducting samples Nd 1.85−xCe 0.15Ca xCuO y or the nonsuperconducting samples Nd 2−xCa xCuO y, leads to a sharp peak at about…”
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