EXAFS EVIDENCE OF INTERSTITIAL OXYGEN DEFECTS IN ND2CUO4+DELTA

被引：17

作者：

GHIGNA, P

SPINOLO, G

FILIPPONI, A

CHADWICK, AV

HANMER, P

机构：

[1] CNR,CSTE,DIPARTIMENTO CHIM FIS,I-27100 PAVIA,ITALY

[2] UNIV PAVIA,INCM,I-27100 PAVIA,ITALY

[3] UNIV AQUILA,DIPARTIMENTO FIS,I-67010 COPPITO,ITALY

[4] UNIV KENT,CHEM LAB,CANTERBURY CT2 7HH,KENT,ENGLAND

来源：

PHYSICA C | 1995年 / 246卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(95)00144-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cu K EXAFS spectra have been measured in order to elucidate the local chemical environment of copper in Nd2CuO4+delta. It has been found that the EXAFS is dominated by coherent multiple scattering in the CuO2 planes, where copper is in almost undistorted square-planar co-ordination. By subtracting the spectra of two samples annealed at different oxygen partial pressures (1 and 10(-6) atm., respectively), evidence is attained of oxygen interstitials in the region of p-type conductivity.

引用

页码：345 / 350

页数：6

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