A large magnetocaloric effect of GdCoO3-δ epitaxial thin films prepared by a polymer assisted spin-coating method

被引：16

作者：

Jia, Jiang-Heng ^{[1
]}

Ke, Ya-Jiao ^{[1
]}

Li, Xu ^{[2
]}

Zhang, Hong-Rui ^{[3
]}

Yu, Zhi-Peng ^{[4
]}

Cheng, Zhao-Hua ^{[3
]}

Zhai, Kun ^{[4
]}

Liu, Zhong-Yuan ^{[4
]}

Wang, Jia-Fu ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Sci, Wuhan 430070, Peoples R China

[2] Natl Inst Metrol, Ctr Adv Measurement Sci, Beijing 100029, Peoples R China

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

[4] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Ctr High Pressure Sci CHiPS, Qinhuangdao 066004, Hebei, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2019年 / 7卷 / 47期

基金：

中国国家自然科学基金;

关键词：

STRAIN-INDUCED FERROMAGNETISM; MAGNETIC ENTROPY CHANGE; THERMAL-CONDUCTIVITY; TB; GD; DY; MAGNETORESISTANCE; TRANSITION; DEPOSITION; EXPANSION;

D O I：

10.1039/c9tc04464g

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the magnetic properties and the magnetocaloric effect of a GdCoO3-delta epitaxial thin film which was successfully grown on a (001) LaAlO3 substrate by a simple polymer assisted deposition (PAD) method. A paramagnetic-antiferromagnetic magnetic phase transition has been observed in the film at T-N (Gd) = 3.2 K. This film exhibits a considerable magnetocaloric effect derived from the interaction between the localized 4f moment of Gd3+ (J = S = 7/2 and L = 0) ions with -Delta S-M = 489.75 mJ K-1 cm(-3) for a field change of 70 kOe at T = 3.5 K. The significant magnetic entropy change together with the large refrigerant capacity indicate that the GdCoO3-delta epitaxial thin film has potential for cryogenic magnetic cooling of microdevices and microsystems.

引用

页码：14970 / 14976

页数：7

共 64 条

[1] Magnetocaloric effect and temperature coefficient of resistance of La0.85Ag0.15MnO3 epitaxial thin films obtained by polymer-assisted deposition [J].

Acosta, R. Cobas ;

Munoz-Perez, S. ;

Cadogan, J. M. ;

Hutchison, W. D. ;

Ridgway, M. C. .

JEMS 2013 - JOINT EUROPEAN MAGNETIC SYMPOSIA, 2014, 75

[2] Composition dependence of magnetic and magnetothermal properties of Ni-Mn-Ga shape memory alloys [J].

Albertini, F ;

Canepa, F ;

Cirafici, S ;

Franceschi, EA ;

Napoletano, M ;

Paoluzi, A ;

Pareti, L ;

Solzi, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :2111-2112

[3] Magnetocaloric materials: From micro- to nanoscale [J].

Belo, Joao H. ;

Pires, Ana L. ;

Araujo, Joao P. ;

Pereira, Andre M. .

JOURNAL OF MATERIALS RESEARCH, 2019, 34 (01) :134-157

[4] Room temperature magnetocaloric effect in Ni-Mn-In [J].

Bhobe, P. A. ;

Priolkar, K. R. ;

Nigam, A. K. .

APPLIED PHYSICS LETTERS, 2007, 91 (24)

[5] MAGNETIC HEAT PUMPING NEAR ROOM-TEMPERATURE [J].

BROWN, GV .

JOURNAL OF APPLIED PHYSICS, 1976, 47 (08) :3673-3680

[6] Spin transitions of Co ions in RCoO3 (R=Gd,Tb) investigated by measuring the electric field gradient at R and Co sites [J].

Carbonari, A. W. ;

Cavalcante, F. H. M. ;

Malavasi, R. F. L. ;

Cabrera-Pasca, G. A. ;

Mestnik-Filho, J. ;

Saxena, R. N. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)

[7] DEVELOPMENT OF PHYSICAL PROPERTIES OF PEROVSKITE GDCO02 BETWEEN 77 AND 1200 K [J].

CASALOT, A ;

DOUGIER, P ;

HAGENMULLER, P .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1971, 32 (02) :407-+

[8] Interplay of austenite and martensite phase inside martensite transition regime and its role on magnetocaloric effect and magnetoresistance in Ni-Mn-Sn based Heusler alloy [J].

Chabri, T. ;

Venimadhav, A. ;

Nath, T. K. .

INTERMETALLICS, 2018, 102 :65-71

[9] Giant magnetocaloric effect in HoGa compound over a large temperature span [J].

Chen, J. ;

Shen, B. G. ;

Dong, Q. Y. ;

Sun, J. R. .

SOLID STATE COMMUNICATIONS, 2010, 150 (3-4) :157-159

[10] Large reversible magnetocaloric effect caused by two successive magnetic transitions in ErGa compound [J].

Chen, J. ;

Shen, B. G. ;

Dong, Q. Y. ;

Hu, F. X. ;

Sun, J. R. .

APPLIED PHYSICS LETTERS, 2009, 95 (13)

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