X-RAY-ABSORPTION SPECTROSCOPY INVESTIGATION OF THE MARTENSITIC STRUCTURAL TRANSFORMATION IN THE RCU (R=RARE EARTH) SERIES

被引：8

作者：

CHABOY, J ^{[1
]}

IBARRA, MR ^{[1
]}

机构：

[1] UNIV ZARAGOZA,CSIC,DEPT FIS MAT CONDENSADA,E-50009 ZARAGOZA,SPAIN

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.52.3206

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present an x-ray-absorption spectroscopy (XAS) investigation performed at the L(1,3) edges of the rare earth Y K edge and K and L(2,3) edges of copper in several R-Cu intermetallic compounds: RCu (R=Y,Gd,Tb), Y1-xTbxCu, and Y1-xTbxCuyAg1-y. XAS spectra at the different absorption edges evidence the apparition of a strong electronic perturbation in the systems after the martensitic transformation. The dynamics of the structural transformation is discussed in terms of the interplay between the modification of both d-band widening and s-d transfer pressure.

引用

页码：3206 / 3213

页数：8

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