About: Magnetocaloric Effect: Direct Measurement

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.mff.cuni.cz/veda/konference/wds/proc/pdf11/WDS11_320_f3_Kastil.pdf
Description	We present the study of magnetocaloric effect of Gd60Mn40 alloy. This alloy was prepared from Gd and Mn of 3N purity. The stoichiometric mixture of these elements was melted in mono-arc furnace in ultra-high purity argon atmosphere and remelted several times to ensure homogeneity of the sample. The crystal structure of the sample was investigated by powder x-ray diffraction. We used the direct method to measure the adiabatic temperature change, ΔT, and the magnetisation isotherms to calculate the isothermal entropy change, ΔS. Direct measurement was performed in magnetic field of 4.7 T in temperature range from 261 to 307 K. We obtained the maximum temperature change ΔTmax = 3.5 K at 284 K. We measured temperature dependence of magnetisation in small magnetic field 0.03 T and evaluated the transition temperature TC = 289 K. We measured magnetic field dependence of magnetization in temperature range from 265 to 305 K in magnetic field up to 5 T and we evaluated the entropy change according to the Maxwell relation. We present the study of magnetocaloric effect of Gd60Mn40 alloy. This alloy was prepared from Gd and Mn of 3N purity. The stoichiometric mixture of these elements was melted in mono-arc furnace in ultra-high purity argon atmosphere and remelted several times to ensure homogeneity of the sample. The crystal structure of the sample was investigated by powder x-ray diffraction. We used the direct method to measure the adiabatic temperature change, ΔT, and the magnetisation isotherms to calculate the isothermal entropy change, ΔS. Direct measurement was performed in magnetic field of 4.7 T in temperature range from 261 to 307 K. We obtained the maximum temperature change ΔTmax = 3.5 K at 284 K. We measured temperature dependence of magnetisation in small magnetic field 0.03 T and evaluated the transition temperature TC = 289 K. We measured magnetic field dependence of magnetization in temperature range from 265 to 305 K in magnetic field up to 5 T and we evaluated the entropy change according to the Maxwell relation. (en)
Title	Magnetocaloric Effect: Direct Measurement Magnetocaloric Effect: Direct Measurement (en)
skos:prefLabel	Magnetocaloric Effect: Direct Measurement Magnetocaloric Effect: Direct Measurement (en)
skos:notation	RIV/00216208:11320/11:10106404!RIV12-GA0-11320___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GD202/09/H041), Z(MSM0021620834)
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Kaštil, Jiří Javorský, Pavel
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	210261
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/11:10106404
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Measurement; Direct; Effect; Magnetocaloric (en)
http://linked.open.../riv/klicoveSlovo	Direct Magnetocaloric Measurement Effect
http://linked.open...ontrolniKodProRIV	[CE94A12E2CF0]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	Proceedings of the 20th Annual Conference of Doctoral Students - WDS 2011,Part III - Physics
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Physics of nanostructures
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Javorský, Pavel Kaštil, Jiří Kamarád, Jiří
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2011-05-31 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Matfyzpress
https://schema.org/isbn	978-80-7378-186-6
http://localhost/t...ganizacniJednotka	11320

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