Magnetocaloric effect in nano- and polycrystalline manganite La 0.7Ca0.3MnO3

被引：46

作者：

Pȩkała M. ^{[1
]}

Drozd V. ^{[1
,2
,3
]}

Fagnard J.F. ^{[4
]}

Vanderbemden P. ^{[4
]}

Ausloos M. ^{[5
]}

机构：

[1] Department of Chemistry, University of Warsaw, 02-089 Warsaw

[2] Department of Chemistry, Kiev National Taras Shevchenko University, Kiev 01033

[3] Center for Study Matter at Extreme Conditions, Florida International University, Miami

[4] SUPRATECS, Montefiore Electricity Institute, B28, University of Liege

[5] SUPRATECS, Institute of Physics, B5a

来源：

Applied Physics A: Materials Science and Processing | 2008年 / 90卷 / 02期

关键词：

Manganite; Magnetocaloric Effect; Magnetic Entropy Change; Magnetization Isotherm; Relative Cooling Power;

D O I：

10.1007/s00339-007-4309-x

中图分类号：

学科分类号：

摘要：

La0.7Ca0.3MnO3 samples were prepared in nano- and polycrystalline forms by the sol-gel and solid state reaction methods, respectively, and structurally characterized by synchrotron X-ray diffraction. The magnetic properties determined by ac susceptibility and dc magnetization measurements are discussed. The magnetocaloric effect in this nanocrystalline manganite is spread over a broader temperature interval than in the polycrystalline case. The relative cooling power of the poly- and nanocrystalline manganites is used to evaluate a possible application for magnetic cooling below room temperature. © 2007 Springer-Verlag.

引用

页码：237 / 241

页数：4

共 15 条

[11]

Tian S.-B., Phan M.-H., Yu S.-C., Hur N.H., Physica B, 327, (2003)

[12]

Phan M.-H., Srinivas V., Yu S.-C., Hur N.H., J. Appl. Phys., 93, (2003)

[13]

Sun Y., Kamarad J., Arnold Z., Kou Z.-Q., Cheng Z.-H., Appl. Phys. Lett., 88, (2006)

[14]

Gschneidner K.A., Pecharsky V.K., Ann. Rev. Mater. Sci., 30, (2000)

[15]

Huesco L.E., Sande P., Miguens D.R., Rivas J., Rivadulla F., Lopez-Quintela M.A., J. Appl. Phys., 91, (2002)

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