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Influence of Er doping on magnetic and magnetocaloric behavior of hexagonal Yb1-xErxMnO3 (x=0.1, 0.2, 0.3, 0.5, 0.7 & 1.0) manganites
被引:7
|作者:
Sattibabu, Bhumireddi
[1
]
Bhatnagar, A. K.
[2
]
Vinod, K.
[3
]
Mani, Awadhesh
[3
]
机构:
[1] GITAM Univ, Inst Sci, Dept Elect & Phys, Visakhapatnam 530045, Andhra Pradesh, India
[2] Univ Hyderabad, Sch Phys, Hyderabad 500046, Andhra Pradesh, India
[3] Indira Gandhi Ctr Atom Res, Mat Sci Grp, Condensed Matter Phys Div, Kalpakkam 603102, Tamil Nadu, India
关键词:
Magnetic materials;
Ceramics;
Thermal properties;
Magnetic entropy;
RARE-EARTH;
RMNO3;
PHASE;
YB;
LU;
D O I:
10.1016/j.jallcom.2017.05.064
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The effect of substitution of Er at the Yb sites in YbMnO3 on its magnetic and magnetocaloric is reported. All Yb1-xErxMnO3 (x = 0.1, 0.2, 0.3, 0.5, 0.7 and 1.0) samples show hexagonal structure with P6(3)cm space group as confirmed by powder X-ray Diffraction. The antiferromagnetic ordering temperature (Neel temperature, T-N) is observed to decrease from 86 K for x = 0.1-76 K for x = 1.0. All compounds show ferromagnetic (FM) ordering due to alignment of the Yb/Er moments below 4 K. A field induced transition is also observed in the isothermal magnetization measurements. The magnetic entropy change increased from 3.0 +/- 0.3 to 4.5 +/- 0.7 J/mole-K in a magnetic field of 100 kOe, whereas the Relative Cooling Power (RCP) changed from 52 +/- 7 to 140 +/- 3 J/mol under an applied magnetic field of 100 kOe, when x increased from 0.1 to 1.0. (C) 2017 Elsevier B.V. All rights reserved.
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页码:284 / 290
页数:7
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