MAGNETIC STUDY OF PRFE2SI2 AND PRFE2GE2 COMPOUNDS BY SUSCEPTIBILITY MEASUREMENTS, NEUTRON-DIFFRACTION, AND MOSSBAUER-SPECTROSCOPY

被引：29

作者：

MALAMAN, B

VENTURINI, G

BLAISE, A

SANCHEZ, JP

AMORETTI, G

机构：

[1] CTR ETUDES NUCL GRENOBLE, DEPT RECH FONDAMENTALE MAT CONDENSEE 85X, F-38041 GRENOBLE, FRANCE

[2] UNIV PARMA, DIPARTIMENTO FIS, I-43100 PARMA, ITALY

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.47.8681

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic properties of the tetragonal (ThCr2Si2- type) PrFe2X2 (X =Si,Ge) compounds have been investigated using magnetization, neutron-diffraction and Fe-57-Mossbauer-spectroscopy measurements. PrFe2Si2 and PrFe2Ge2 Were shown to order antiferromagnetically (AF) at 7.70 and 14.2 K, respectively. Neutron and Mossbauer transferred-fields data indicate the occurrence of a type-II AF structure (+ + - -) with the moment aligned along the c axis in both compounds but with quite different saturation moments: 1.41 (Si) and 2.75 mu(B) (Ge) at 1.3 K. In addition, PrFe2Ge2 presents a transition towards an incommensurate modulated structure at 9 K. The results are discussed in the frame of a crystal-field model.

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页码：8681 / 8690

页数：10

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