Relation between paramagnetic entropy and disordered local moment in La(Fe0.88Si0.12)13 magnetocaloric compound

被引：8

作者：

Fujita, Asaya ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Chubu Ctr, Nagoya, Aichi 4638560, Japan

来源：

APL MATERIALS | 2016年 / 4卷 / 06期

关键词：

ELECTRON METAMAGNETIC TRANSITION; ALLOYS; REFRIGERATION; MAGNETORESISTANCE; LA(FEXSI1-X)(13); STABILITY; LA(FE; STATE; MN;

D O I：

10.1063/1.4953434

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The paramagnetic fluctuations are investigated in La(Fe0.88Si0.12)(13). The disordered local moment (DLM) is represented by the first principle calculations. With a reduction of the volume, the DLM amplitude decreases gradually. In the temperature dependence of electrical resistivity rho under hydrostatic pressure, an upturn in the variation of rho in the paramagnetic state was observed with decreasing temperature, which is originated from the Curie-Weiss-type DLM fluctuations. In the vicinity of the critical pressure for disappearance of the DLM, the variation of rho as a function of log(T) was observed. (C) 2016 Author(s).

引用

页数：5

共 27 条

[1] LOCAL MOMENT DISORDER IN FERROMAGNETIC-ALLOYS [J].

AKAI, H ;

DEDERICHS, PH .

PHYSICAL REVIEW B, 1993, 47 (14) :8739-8747

[2]

[Anonymous], 1985, Springer Series in Solid-State Sciences

[3]

BARCLAY JA, 1981, Patent No. 4332135

[4] Stability and Magnetocaloric Properties of Sintered La(Fe, Mn, Si)13Hz Alloys [J].

Barcza, A. ;

Katter, M. ;

Zellmann, V. ;

Russek, S. ;

Jacobs, S. ;

Zimm, C. .

IEEE TRANSACTIONS ON MAGNETICS, 2011, 47 (10) :3391-3394

[5] New developments in caloric materials for cooling applications [J].

Crossley, S. ;

Mathur, N. D. ;

Moya, X. .

AIP ADVANCES, 2015, 5 (06)

[6] RESISTIVE ANOMALIES AT MAGNETIC CRITICAL POINTS [J].

FISHER, ME ;

LANGER, JS .

PHYSICAL REVIEW LETTERS, 1968, 20 (13) :665-&

[7] Pressure-induced anomalies in itinerant-electron metamagnetic properties around the critical end point in La(Fe0.89Si0.11)13 [J].

Fujita, A ;

Fukamichi, K ;

Yamada, M ;

Goto, T .

PHYSICAL REVIEW B, 2006, 73 (10)

[8] Stability of metallic, magnetic and electronic states in NaZn13-type La(FexSi1-x)13 magnetocaloric compounds [J].

Fujita, A. ;

Yako, H. .

SCRIPTA MATERIALIA, 2012, 67 (06) :578-583

[9] Itinerant-electron metamagnetic transition and large magnetovolume effects in La(FexSi1-x)13 compounds -: art. no. 014410 [J].

Fujita, A ;

Fujieda, S ;

Fukamichi, K ;

Mitamura, H ;

Goto, T .

PHYSICAL REVIEW B, 2002, 65 (01) :144101-144106

[10] Itinerant electron metamagnetic transition in La(FexSi1-x)13 intermetallic compounds [J].

Fujita, A ;

Akamatsu, Y ;

Fukamichi, K .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) :4756-4758

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