Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (11): 1237-1247.DOI: 10.15541/jim20180047
• Orginal Article • Previous Articles Next Articles
LIU Jiao1, WANG Wen-Qing1,2, WU Hong-Ye1,2, TIAN Ye1, CAO Feng-Ze1, ZHAO Jian-Jun1,2
Received:
2018-01-29
Revised:
2018-05-23
Published:
2018-11-16
Online:
2018-10-20
About author:
LIU Jiao. E-mail: 907156479@qq.com
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CLC Number:
LIU Jiao, WANG Wen-Qing, WU Hong-Ye, TIAN Ye, CAO Feng-Ze, ZHAO Jian-Jun. Electromagnetic Property of Co-doped La0.8Sr0.2MnO3 Perovskite Manganese Oxides[J]. Journal of Inorganic Materials, 2018, 33(11): 1237-1247.
Sample | a/nm | b/nm | V/nm 3 | c/nm |
---|---|---|---|---|
x=0 | 0.550993 | 0.5522 | 0.2032339 | 0.667965 |
x=0.1 | 0.551356 | 0.551354 | 0.2028696 | 0.667351 |
x=0.3 | 5.49571 | 5.49557 | 201.3505 | 6.66678 |
Table 1 Lattice parameters and cell volume of La0.8Sr0.2Mn1-xCoxO3(x=0, 0.1 and 0.3) samples
Sample | a/nm | b/nm | V/nm 3 | c/nm |
---|---|---|---|---|
x=0 | 0.550993 | 0.5522 | 0.2032339 | 0.667965 |
x=0.1 | 0.551356 | 0.551354 | 0.2028696 | 0.667351 |
x=0.3 | 5.49571 | 5.49557 | 201.3505 | 6.66678 |
Fig. 2 M-T curves (a)~(c) and χT-T curves(d)~(f) for the La0.8Sr0.2Mn1-xCoxO3(x=0, 0.1, 0.3) samples at 0.01T magnetic field with the insets showing the corresponding dMFC/dT-T curves
Fig. 4 χ-1-T curves of the La0.8Sr0.2Mn1-xCoxO3(x=0, 0.1, 0.3) samples under a 0.01T magnetic field with the insets showing the lgχ-1 -lgtm curves at 0.01T, where tm=(T-TC)/TC
Fig. 5 M-H curves((a-c)) and isothermal Arrott curves ((d)~(f), H/M versus M2) of the magnetization of samples La0.8Sr0.2Mn1-xCoxO3 (x = 0, 0.1, 0.3) varying with the applied magnetic field at different temperatures
Fig. 6 Fitting of La0.8Sr0.2MnO3(A), La0.8Sr0.2Mn0.9Co0.1O3(B) and La0.8Sr0.2Mn0.7Co0.3O3(C) sample curves to mean field, 3D-Heisenberg, 3D-Ising, and tricritical models
Fig. 7 Curves of spontaneous magnetization at temperatures below the Curie temperature for La0.8Sr0.2MnO3(A), La0.8Sr0.2Mn0.9Co0.1O3(B) and La0.8Sr0.2Mn0.7Co0.3O3(C) sample versus temperature MS-T (a), MS (dMs/dT)-1-T and their fitted straight lines (b); Curves of zero-field susceptibility reciprocal at temperatures above the Curie temperature for La0.8Sr0.2Mn0.7Co0.3O3 sample versus temperature χ0-1-T (c), χ0-1 (dχ0-1/dT)-1-T and their fitted straight lines(d); The illustrations are for the corresponding Arrott-Plot
Fig. 8 Curves of magnetic entropy change with temperature for the samples La0.8Sr0.2Mn1-xCoxO3 (x = 0 (a), 0.1 (b), 0.3 (c)) under the same magnetic field of 108~278 K, 100~300 K and 110~285 K, respectively (-ΔS-T)
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