Effective Charges of Atoms of HTSC La2-xSrxCuO4 Ceramics Determined from the Analysis of the Parameters of the Nuclear Quadrupole Interaction

被引：0

作者：

Marchenko, A. V. ^{[1
]}

Nasredinov, F. S. ^{[2
]}

Kiselev, V. S. ^{[1
]}

Seregin, P. P. ^{[1
]}

Shakhovich, K. B. ^{[1
]}

机构：

[1] Herzen State Pedag Univ Russia, St Petersburg 191186, Russia

[2] Peter Great St Petersburg Polytech Univ, St Petersburg 195251, Russia

来源：

GLASS PHYSICS AND CHEMISTRY | 2018年 / 44卷 / 05期

关键词：

high-temperature superconductors; nuclear quadrupole interaction; Mossbauer spectroscopy; effective charges;

D O I：

10.1134/S1087659618050115

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using the comparison method of the calculated (the model of point charges) and experimental (Mossbauer spectroscopy and the nuclear magnetic resonance) parameters of the nuclear quadrupole interaction, it is shown that the effective charges of all the atoms of the lattices of the superconducting La2-xSrxCuO4 ceramics correspond to the standard degrees of their oxidation, except for atoms of the planar oxygen, the lowered charge of which is interpreted as the result of localization on them of the hole appearing when La3+ ions are substituted by Sr2+ ions.

引用

页码：412 / 417

页数：6

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