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

[1]

Gschneidner Jr. K.A., Pecharsky V.K., Tsokol A.O., Rep. Prog. Phys., 68, (2005)

[2]

Bruck E., Tegus O., Li X.W., De Boer F.R., Buschow K.H.J., Physica B, 327, (2003)

[3]

Phan M.H., Yu S.-C., J. Magn. Magn. Mater., 308, (2007)

[4]

Pekala M., Drozd V., J. Non-Cryst. Solids, 353, (2007)

[5]

Pekala M., Drozd V.A., J. Alloy. Compd., 437, (2007)

[6]

Wolff Fabris F., Pekala M., Drozd V., Fagnard J.-F., Vanderbemden P., Liu R.-S., Ausloos M., J. Appl. Phys., 101, (2007)

[7]

Gaudon M., Robert C.L., Ansart F., Stevens P., Rousset A., Solid State Sci., 4, (2002)

[8]

Larson A.C., Von Dreele R.B., Los Alamos National Laboratory Report LAUR, (1994)

[9]

Rozenberg E., Tsindlekht M.I., Felner I., Sominski E., Gedanken A., Mukovskii Ya.M., IEEE Trans. Mag., 43, (2007)

[10]

Phan M.-H., Yu S.-C., Hur N.H., Jeong Y.-H., J. Appl. Phys., 96, (2004)

← 1 2 →