Magnetic-martensitic transition of Tb5Si2Ge2 studied with neutron powder diffraction -: art. no. 024417

被引：74

作者：

Morellon, L ^{[1
]}

Ritter, C

Magen, C

Algarabel, PA

Ibarra, MR

机构：

[1] Univ Zaragoza, Dept Fis Mat Condensada, E-50009 Zaragoza, Spain

[2] Univ Zaragoza, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain

[3] CSIC, E-50009 Zaragoza, Spain

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.68.024417

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of the application of an external magnetic field in the paramagnetic phase of the giant magnetocaloric compound Tb5Si2Ge2 has been studied by means of macroscopic (magnetostriction and magnetoresistance) and microscopic neutron powder diffraction experiments. As a main result, we have discovered the existence of a ferromagnetic monoclinic phase in these intriguing 5:4 compounds. Long-range ferromagnetism sets in within the monoclinic structure on cooling down before the structural transformation into the orthorhombic phase takes place. Our results may shed some light into understanding the complex coupling between crystallographic and magnetic degrees of freedom and the mechanisms that trigger the field-induced processes in the Tb-5(SixGe1-x)(4) compounds.

引用

页数：6

共 30 条

[21]

2-O

[22] Magnetic and structural phase diagram of Tb5(SixGe1-x)4 -: art. no. 094405 [J].

Ritter, C ;

Morellon, L ;

Algarabel, PA ;

Magen, C ;

Ibarra, MR .

PHYSICAL REVIEW B, 2002, 65 (09) :1-10

[23] RECENT ADVANCES IN MAGNETIC-STRUCTURE DETERMINATION BY NEUTRON POWDER DIFFRACTION [J].

RODRIGUEZCARVAJAL, J .

PHYSICA B, 1993, 192 (1-2) :55-69

[24] Electronic structure and magnetic properties of Gd5(Si1-xGex)4 [J].

Samolyuk, GD ;

Antropov, VP .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8540-8542

[25] Hall effect in Gd5(Si1.8Ge2.2) [J].

Stankiewicz, J ;

Morellon, L ;

Algarabel, PA ;

Ibarra, MR .

PHYSICAL REVIEW B, 2000, 61 (19) :12651-12653

[26] Magnetic and magneto-caloric properties of Tb5Ge2Si2 [J].

Tegus, O ;

Dagula, O ;

Brück, E ;

Zhang, L ;

de Boer, FR ;

Buschow, KHJ .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8534-8536

[27] Magnetic properties and magnetocaloric effect of Tb5(SixGe1-x)4 compounds [J].

Thuy, NP ;

Nong, NV ;

Hien, NT ;

Tai, LT ;

Vinh, TQ ;

Thang, PD ;

Brück, E .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 242 :841-843

[28] Structural and magnetic properties of Gd5SixSn4-x -: art. no. 214413 [J].

Wang, HB ;

Altounian, Z ;

Ryan, DH .

PHYSICAL REVIEW B, 2002, 66 (21) :1-6

[29] Crystal structure and phase relationships in the pseudobinary system Nd5Si4-Nd5Ge4 [J].

Yang, HF ;

Rao, GH ;

Liu, GY ;

Ouyang, ZW ;

Liu, WF ;

Feng, XM ;

Chu, WG ;

Liang, JK .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 346 (1-2) :190-196

[30] Crystal structure and phase relationships in the pseudobinary system Pr5Si4-Pr5Ge4 [J].

Yang, HF ;

Rao, GH ;

Chu, WG ;

Liu, GY ;

Ouyang, ZW ;

Liang, JK .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 339 (1-2) :189-194

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