Large magnetic entropy change in Cu-doped manganites

被引：62

作者：

Phan, MH

Peng, HX

Yu, SC

Tho, ND

Chau, N

机构：

[1] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England

[2] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea

[3] Natl Univ Hanoi, Ctr Mat Sci, Hanoi, Vietnam

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 285卷 / 1-2期

基金：

新加坡国家研究基金会;

关键词：

magnetic entropy; magnetic refrigeration; Cu-doped manganites;

D O I：

10.1016/j.jmmm.2004.07.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic entropy change above 300 K. which is larger than that of gadolinium (Phys. Rev, B 57 (1998) 3478), has been observed in a Cu-doped manganites of La0.7Sr0.3Mn1-xCuxO3 (x = 0.05, 0.1). The large magnetic entropy change originated from a sharp magnetization jump is associated with a first-order crystallographic phase transition of the sample near the Curie temperature. These results suggest that the present Cu-doped manganites are suitable materials for magnetic refrigerants in the room temperature magnetic-refrigeration technology. (C) 2004 Elsevier B.V. All rights reserved.

引用

收藏

页码：199 / 203

页数：5

相关论文

共 20 条

[1] Tunable magnetocaloric effect in ceramic perovskites [J].

Bohigas, X ;

Tejada, J ;

del Barco, E ;

Zhang, XX ;

Sales, M .

APPLIED PHYSICS LETTERS, 1998, 73 (03) :390-392

[2] Magnetic phase transitions and the magnetothermal properties of gadolinium [J].

Dan'kov, SY ;

Tishin, AM ;

Pecharsky, VK ;

Gschneidner, KA .

PHYSICAL REVIEW B, 1998, 57 (06) :3478-3490

[3] Large magnetic entropy change in perovskite-type manganese oxides [J].

Guo, ZB ;

Du, YW ;

Zhu, JS ;

Huang, H ;

Ding, WP ;

Feng, D .

PHYSICAL REVIEW LETTERS, 1997, 78 (06) :1142-1145

[4] Drop of magnetocaloric effect related to the change from first- to second-order magnetic phase transition in La2/3(Ca1-xSrx)1/3MnO3 [J].

Mira, J ;

Rivas, J ;

Hueso, LE ;

Rivadulla, F ;

Quintela, MAL .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8903-8905

[5] Magnetocaloric effect and magnetic refrigeration [J].

Pecharsky, VK ;

Gschneidner, KA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :44-56

[6] Giant magnetocaloric effect in Gd-5(Si2Ge2) [J].

Pecharsky, VK ;

Gschneidner, KA .

PHYSICAL REVIEW LETTERS, 1997, 78 (23) :4494-4497

[7] Some common misconceptions concerning magnetic refrigerant materials [J].

Pecharsky, VK ;

Gschneidner, KA .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (09) :4614-4622

[8] Magnetic and magnetocaloric properties of La0.7Ca0.3-xBaxMnO3 compounds [J].

Phan, MH ;

Tian, SB ;

Yu, SC ;

Ulyanov, AN .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 256 (1-3) :306-310

[9] Anomalous transport properties of heavily doped polycrystalline La0.825Sr0.175Mn1-xCuxO3 [J].

Pi, L ;

Xu, XJ ;

Zhang, YH .

PHYSICAL REVIEW B, 2000, 62 (09) :5667-5673

[10] SIMULTANEOUS STRUCTURAL, MAGNETIC, AND ELECTRONIC-TRANSITIONS IN LA1-XCAXMNO3 WITH X=0.25 AND 0.50 [J].

RADAELLI, PG ;

COX, DE ;

MAREZIO, M ;

CHEONG, SW ;

SCHIFFER, PE ;

RAMIREZ, AP .

PHYSICAL REVIEW LETTERS, 1995, 75 (24) :4488-4491