Giant anisotropy of magnetocaloric effect in TbMnO3 single crystals

被引：127

作者：

Jin, Jin-Ling ^{[1
]}

Zhang, Xiang-Qun ^{[1
]}

Li, Guo-Ke ^{[1
]}

Cheng, Zhao-Hua ^{[1
]}

Zheng, Lin ^{[2
]}

Lu, Yi ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China

[2] Baotou Normal Univ, Dept Phys, Baotou 014030, Peoples R China

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 18期

关键词：

TRANSITION;

D O I：

10.1103/PhysRevB.83.184431

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetocaloric effect (MCE) in TbMnO3 single crystals was investigated by isothermal magnetization curves for the ab plane at low temperatures. Large magnetic entropy change, Delta S-M = -18.0 J/kg K, and the refrigerant capacity, RC = 390.7 J/kg, are achieved near the ordering temperature of Tb3+ moment (T-N(Tb)) under 70 kOe along the a axis. Furthermore, the TbMnO3 single crystal exhibits a giant MCE anisotropy. The difference of Delta S-M and RC between the a and b axes is field and temperature dependent, which reaches maximum values of 11.4 J/kg K and 304.1 J/kg, respectively. By taking magnetocrystalline anisotropy into account, the rotating Delta S-M within the ab plane can be well simulated, indicating that the anisotropy of Delta S-M is directly contributed from the magnetocrystalline anisotropy. Our finding for giant MCE anisotropy in TbMnO3 single crystals explores the possibility of using this material for magnetic refrigerators by rotating its magnetization vector rather than moving it in and out of the magnet.

引用

页数：5

共 24 条

[1] Magnetic order and ferroelectricity in RMnO3 multiferroic manganites: coupling between R- and Mn-spins [J].

Aliouane, N. ;

Prokhnenko, O. ;

Feyerherm, R. ;

Mostovoy, M. ;

Strempfer, J. ;

Habicht, K. ;

Rule, K. C. ;

Dudzik, E. ;

Wolter, A. U. B. ;

Maljuk, A. ;

Argyriou, D. N. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (43)

[2] Persistent ferromagnetism in antiferromagnetic Pr0.6Ca0.4MnO3 [J].

Biskup, N. ;

de Andres, A. ;

Garcia-Hernandez, M. .

PHYSICAL REVIEW B, 2008, 78 (18)

[3] Preparation and magnetocaloric effect of self-doped La0.8-xNa0.2□xMnO3+δ (□ = vacancies) polycrystal [J].

Chen, W ;

Zhong, W ;

Hou, DL ;

Gao, RW ;

Feng, WC ;

Zhu, MG ;

Du, YW .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (45) :11889-11896

[4] Influence of a magnetic two-phase state on the magnetocaloric effect in the La1-xSrxMnO3 manganites [J].

Demin, RV ;

Koroleva, LI .

PHYSICS OF THE SOLID STATE, 2004, 46 (06) :1081-1083

[5] Magnetocaloric effect in spherical La(FexSi1-x)13 and their hydrides for active magnetic regenerator-type refrigerator [J].

Fujita, A. ;

Koiwai, S. ;

Fujieda, S. ;

Fukamichi, K. ;

Kobayashi, T. ;

Tsuji, H. ;

Kaji, S. ;

Saito, A. T. .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)

[6] Recent developments in magnetic refrigeration [J].

Gschneidner, KA ;

Pecharsky, VK ;

Pecharsky, AO ;

Zimm, CB .

RARE EARTHS '98, 1999, 315-3 :69-76

[7] Recent developments in magnetocaloric materials [J].

Gschneidner, KA ;

Pecharsky, VK ;

Tsokol, AO .

REPORTS ON PROGRESS IN PHYSICS, 2005, 68 (06) :1479-1539

[8] Spiral magnets as magnetoelectrics [J].

Kimura, T. .

ANNUAL REVIEW OF MATERIALS RESEARCH, 2007, 37 :387-413

[9] Distorted perovskite with eg1 configuration as a frustrated spin system -: art. no. 060403 [J].

Kimura, T ;

Ishihara, S ;

Shintani, H ;

Arima, T ;

Takahashi, KT ;

Ishizaka, K ;

Tokura, Y .

PHYSICAL REVIEW B, 2003, 68 (06)

[10] Magnetic control of ferroelectric polarization [J].

Kimura, T ;

Goto, T ;

Shintani, H ;

Ishizaka, K ;

Arima, T ;

Tokura, Y .

NATURE, 2003, 426 (6962) :55-58

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