Investigations of the solid solution NdMn2-xFexGe2 (x=0.1-1.4) by magnetic measurements and neutron diffraction

被引：51

作者：

Venturini, G ^{[1
]}

Malaman, B ^{[1
]}

Ressouche, E ^{[1
]}

机构：

[1] CEA,DEPT RECH FONDAMENTALE MAT CONDENSEE,SPSMS MDN,F-38054 GRENOBLE 9,FRANCE

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 237卷 / 1-2期

关键词：

rare earth; iron germanides; manganese germanides; solid solutions; magnetic measurements; neutron diffraction;

D O I：

10.1016/0925-8388(95)02177-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The solid solution NdMn2-xFexGe2 (x < 1.4) was studied by means of X-ray powder diffraction, magnetic measurements and neutron diffraction study. A typical SmMn2Ge2-like behaviour is observed for x=0.425. The magnetic structures of NdMn1-6Fe0.4Ge2, NdMn1.4Fe0.6Ge2 and NdMn1.1Fe0.9Ge2 have been determined between 2 and 300 K. The results lead to the construction of a partial x-T magnetic phase diagram. Results of both NdMn2-xFexGe2 and LaMn2-xFexGe2 solid solutions are compared, and the effects of Mn substitution on the in-plane magnetic couplings are discussed. The effects of iron substitution on the interplane magnetic couplings are examined. A slight increase of the critical d(Mn-Mn) distance is observed. In NdMn1.1Fe0.9Ge2, the onset of antiferromagnetism seems to be correlated to a large decrease of the Ge-Ge separation.

引用

页码：61 / 73

页数：13

共 27 条

[1] MAGNETIC-PROPERTIES OF SMMN2GE2 COMPOUNDS [J].

DURAJ, M ;

DURAJ, R ;

SZYTULA, A ;

TOMKOWICZ, Z .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1988, 73 (02) :240-246

[2] REENTRANT FERROMAGNETISM OBSERVED IN SMMN2GE2 [J].

FUJII, H ;

OKAMOTO, T ;

SHIGEOKA, T ;

IWATA, N .

SOLID STATE COMMUNICATIONS, 1985, 53 (08) :715-717

[3] THE P-T MAGNETIC PHASE-DIAGRAM OF SMMN2GE2 [J].

GYORGY, EM ;

BATLOGG, B ;

REMEIKA, JP ;

VANDOVER, RB ;

FLEMING, RM ;

BAIR, HE ;

ESPINOSA, GP ;

COOPER, AS ;

MAINES, RG .

JOURNAL OF APPLIED PHYSICS, 1987, 61 (08) :4237-4239

[4] MAKING AND BREAKING BONDS IN THE SOLID-STATE - THE THCR2SI2 STRUCTURE [J].

HOFFMANN, R ;

ZHENG, C .

JOURNAL OF PHYSICAL CHEMISTRY, 1985, 89 (20) :4175-4181

[5] PRESSURE EFFECT ON THE CURIE-TEMPERATURE AND EXCHANGE STRICTION OF LAMN2GE2 [J].

KANEKO, T ;

YASUI, H ;

KANOMATA, T ;

SUZUKI, T .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1992, 104 :1951-1952

[6] PRESSURE EFFECT ON THE LATTICE-PARAMETERS OF YMN2GE2, LAMN2GE2, NDMN2GE2, YMN2SI2, LAMN2SI2, LDMN2SI2 [J].

KANOMATA, T ;

KAWASHIMA, T ;

KANEKO, T ;

TAKAHASHI, H ;

MORI, T .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1990, 120 (02) :K117-K120

[7] PRESSURE EFFECT ON THE MAGNETIC TRANSITION-TEMPERATURE OF INTERMETALLIC COMPOUNDS NDMN2GE2 AND PRMN2GE2 [J].

KAWASHIMA, T ;

KANOMATA, T ;

YOSHIDA, H ;

KANEKO, T .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 90-1 :721-722

[8]

LECIEJEWICZ J, 1982, SOLID STATE COMMUN, V45, P149

[9] MAGNETIC STUDY OF PRFE2SI2 AND PRFE2GE2 COMPOUNDS BY SUSCEPTIBILITY MEASUREMENTS, NEUTRON-DIFFRACTION, AND MOSSBAUER-SPECTROSCOPY [J].

MALAMAN, B ;

VENTURINI, G ;

BLAISE, A ;

SANCHEZ, JP ;

AMORETTI, G .

PHYSICAL REVIEW B, 1993, 47 (14) :8681-8690

[10] NEUTRON-DIFFRACTION STUDIES OF CAMN2GE2 AND BAMN2GE2 COMPOUNDS - 1ST EXAMPLES OF ANTIFERROMAGNETIC MN PLANES IN THCR2SI2-TYPE STRUCTURE COMPOUNDS [J].

MALAMAN, B ;

VENTURINI, G ;

WELTER, R ;

RESSOUCHE, E .

JOURNAL OF ALLOYS AND COMPOUNDS, 1994, 210 (1-2) :209-212

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