ELECTROMAGNETIC PROPERTIES OF ELECTROPHORETIC YBA2CU3O7-DELTA FILMS

被引：13

作者：

HEIN, M

KRAUT, S

MAHNER, E

MULLER, G

OPIE, D

PIEL, H

PONTO, L

WEHLER, D

BECKS, M

KLEIN, U

PEINIGER, M

机构：

[1] Fachbereich Physik der Bergischen Universität, Wuppertal 1, D-5600

[2] Interatom GmbH, Bergisch-Gladbach

来源：

JOURNAL OF SUPERCONDUCTIVITY | 1990年 / 3卷 / 03期

关键词：

electrophoretic films; grain aligned; Y[!sub]1[!/sub]Ba[!sub]2[!/sub]Cu[!sub]3[!/sub]O[!sub]7-δ[!/sub;

D O I：

10.1007/BF00625275

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to apply high Tc superconductivity to general microwave cavities and to shielding devices for quasistationary magnetic fields, we have developed an electrophoretic coating technique. This work reports about the continuation of our experiments. More than 60 samples of electrophoretic layers deposited on silver substrates were fabricated by systematically varying the processing parameters. The r.f. surface resistance measured at 21.5 GHz and 77 K at low excitation fields is found to be a sensitive measure of the quality of the samples and falls rapidly with increasing average grain size. Textured electrophoretic layers of large grain size show the smallest sensitivity of Rs against the r.f. surface magnetic field Hs. The magnetic sensitivity dRs/dHs is found to be in direct proportion to Rs (77 K). After optimizing the sintering procedure the electrodes of the prototype cavity for a compact hydrogen maser were coated. The cavity was successfully operated at 1.42 GHz, and a surface resistance of 1 mΩ was achieved at 77 K. This compares to 4 mΩ for copper at the same temperature. © 1990 Plenum Publishing Corporation.

引用

页码：323 / 329

页数：7

共 16 条

[1]

Rubin D.L., Green K., Gruschus J., Kirchgessner J., Moffat D., Padaee H., Sears J., Shu Q.S., Schneemeyer L.F., Waszczak J.V., Phys. Rev. B, 38, (1988)

[2]

Klein N., Muller G., Piel H., Roas B., Schultz L., Klein U., Peiniger M., Appl. Phys. Lett., 54, (1989)

[3]

Hein M., Muller G., Piel H., Ponto L., Becks M., Klein U., Peiniger M., J. Appl. Phys., 66, (1989)

[4]

Muller G., Brauer D.J., Eujen R., Hein M., Klein N., Piel H., Ponto L., Klein U., Peiniger M., Surface impedance measurements on high T/sub c/ superconductors, IEEE Transactions on Magnetics, 25 MAG, (1989)

[5]

Maiti H.S., Basu R.N., Datta S., Coating of superconducting.123 compound on silver substrate by electrophoretic technique, Phase Transitions, 19, (1989)

[6]

Koura N., Et al., J. Electrochem. Soc. Jpn., 56, (1988)

[7]

Chu C.T., Dunn B., Appl. Phys. Lett., 55, (1989)

[8]

Farrell D.E., Chandrasekhar B.S., Dguire M.R., Fang M.M., Kogan V.G., Clem J.R., Finnemore D.K., Phys. Rev. B, 36, (1987)

[9]

Greuter F., Kluge-Weiss P., Zimmermann H., Schuler C., Physica, 100 153–155, (1988)

[10]

Kupfer H., Green S.M., Jiang C., Mei, Luo H.L., Meier-Hirmer R., Politis C., Z. Phys. B, 71, (1988)

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