Enhancement of Tc in HgBa2Ca2Cu3O8+δ by fluorination -: art. no. 064511

被引：45

作者：

Lokshin, KA ^{[1
]}

Pavlov, DA

Putilin, SN

Antipov, EV

Sheptyakov, DV

Balagurov, AM

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

[2] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.63.064511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A 4 K increase of T-c in Hg-1223 was achieved by the exchange with fluorine of the extra oxygen located in (HgOdelta) layer. Fluorination of the initially reduced Hg-1223 samples with T-c similar or equal to 100 K by XeF2 results in the increase of T-c up to 138 K while treatment in oxygen flow causes the enhancement of T-c not higher than up to 134 K. From x-ray and neutron diffraction data we conclude that shortening of the in-plane Cu-O distances without significant (CuO2) layers buckling in fluorinated Hg-1223 seems to be thr main structural factor responsible for the enhancement of T-c.

引用

页数：5

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