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Tunable magnetocaloric effect near room temperature in La0.7-x Pr x Sr0.3MnO3 (0.02 ≤ x ≤ 0.30) manganites
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10.1063/1.3698346
/content/aip/journal/jap/111/6/10.1063/1.3698346
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/6/10.1063/1.3698346

Figures

Image of FIG. 1.
FIG. 1.

X-ray diffraction patterns for polycrystalline La0.7-x Pr x Sr0.3MnO3.

Image of FIG. 2.
FIG. 2.

(a) Temperature dependences of magnetization under an external field of 5 mT for La0.7-x Pr x Sr0.3MnO3 and (b) determination of TC using the inflection point of .

Image of FIG. 3.
FIG. 3.

Hysteresis loops of La0.7-x Pr x Sr0.3MnO3 recorded at 300 K.

Image of FIG. 4.
FIG. 4.

Isothermal magnetization curves for (a) x = 0.02 and (b) x = 0.30 measured at various temperatures over an applied field range of 0–1.5 T. (c) and (d) show Arrott plot analyses for the same compositions.

Image of FIG. 5.
FIG. 5.

Temperature dependences of −ΔS M under an applied field change of 1.5 T for La0.7-x Pr x Sr0.3MnO3.

Image of FIG. 6.
FIG. 6.

Tolerance factor (t)/compositional (x) dependence of Curie temperature (TC) and maximum magnetic entropy change () for La0.7-x Pr x Sr0.3MnO3. The inset shows the same dependences for La0.7-x Pr x Ca0.3MnO3.31 Reproduced with permission from J. Appl. Phys. 110, 013906 (2011). Copyright 2011 American Institute of Physics.

Tables

Generic image for table
Table I.

Lattice parameters calculated from XRD scans for each composition.

Generic image for table
Table II.

The magnetic and magnetocaloric properties of La0.7- x Pr x Sr0. 3MnO3 for 0.02 ≤ x ≤ 0.30.

Generic image for table
Table III.

Comparison of the magnetocaloric parameters of La0.7- x Pr x Sr0. 3MnO3 with similar magnetic refrigerant materials.

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/content/aip/journal/jap/111/6/10.1063/1.3698346
2012-03-29
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tunable magnetocaloric effect near room temperature in La0.7-xPrxSr0.3MnO3 (0.02 ≤ x ≤ 0.30) manganites
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/6/10.1063/1.3698346
10.1063/1.3698346
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