Inhomogeneous electronic state of low-doped insulating manganites:: NMR and μSR evidence

被引：19

作者：

Allodi, G

Guidi, MC

De Renzi, R

Pieper, MW

机构：

[1] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy

[2] Univ Parma, Ist Nazl Fis Mat, I-43100 Parma, Italy

[3] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 242卷

基金：

奥地利科学基金会;

关键词：

colossal magnetoresistance; magnetic clusters; polarons; NMR; muon spin rotation;

D O I：

10.1016/S0304-8853(01)01031-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on an Mn-55 NMR investigation of calcium-doped manganite samples carried out at 4.2K. In the insulating members of the family. the localization or hole-rich Ferromagnetic clusters is revealed by the peculiar two-peaked spectra, and by distinct shifts of the resonance lines in an external field. Results are discussed in view of inelastic neutron scattering findings and combined La-139 NMR and pSR data. (C) 2002 Published by Elsevier Science B.V.

引用

页码：635 / 639

页数：5

共 15 条

[1] First order nucleation of charge ordered domains in La0.5Ca0.5MnO3 detected by 139La and 55Mn NMR [J].