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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F13%3A00424315%21RIV14-AV0-68378271
rdf:type
n11:Vysledek skos:Concept
dcterms:description
The effect of hydrostatic pressure at room temperature on the resistance and magnetoresistance(MR) of a discontinuous metal-insulator multilayer (DMIM) of nominal composition [Fe(tFe=0.7nm)/MgO(tMgO=3nm)]15 has been studied. The resistivity of the DMIM,ρ, decreases linearlywith pressure indicating an increase in conduction via tunneling effect. The value of coefficient(1/ρO)dp/dP=–3.910-2kbar-1is higher than reported values in other granular films implying that the electronic state of the DMIM is close to the iron percolation threshold. At the maximum applied magnetic field (3 kOe) the MR ratio increases from 0.6% at ambient pressure to 1.1% at 7 kbar. This result can be explained by a reduction of the tunnel barrier width induced by the hydrostatic pressure. The effect of hydrostatic pressure at room temperature on the resistance and magnetoresistance(MR) of a discontinuous metal-insulator multilayer (DMIM) of nominal composition [Fe(tFe=0.7nm)/MgO(tMgO=3nm)]15 has been studied. The resistivity of the DMIM,ρ, decreases linearlywith pressure indicating an increase in conduction via tunneling effect. The value of coefficient(1/ρO)dp/dP=–3.910-2kbar-1is higher than reported values in other granular films implying that the electronic state of the DMIM is close to the iron percolation threshold. At the maximum applied magnetic field (3 kOe) the MR ratio increases from 0.6% at ambient pressure to 1.1% at 7 kbar. This result can be explained by a reduction of the tunnel barrier width induced by the hydrostatic pressure.
dcterms:title
Pressure dependence of the magneto-transport properties in Fe/MgO granular systems Pressure dependence of the magneto-transport properties in Fe/MgO granular systems
skos:prefLabel
Pressure dependence of the magneto-transport properties in Fe/MgO granular systems Pressure dependence of the magneto-transport properties in Fe/MgO granular systems
skos:notation
RIV/68378271:_____/13:00424315!RIV14-AV0-68378271
n11:predkladatel
n16:ico%3A68378271
n3:aktivita
n9:I
n3:aktivity
I
n3:cisloPeriodika
10
n3:dodaniDat
n7:2014
n3:domaciTvurceVysledku
n12:7747586 n12:1637002
n3:druhVysledku
n4:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
99081
n3:idVysledku
RIV/68378271:_____/13:00424315
n3:jazykVysledku
n13:eng
n3:klicovaSlova
granular materials; tunneling magnetoresistance; hydrostatic pressure
n3:klicoveSlovo
n5:granular%20materials n5:hydrostatic%20pressure n5:tunneling%20magnetoresistance
n3:kodStatuVydavatele
KR - Korejská republika
n3:kontrolniKodProRIV
[9427AE51FE82]
n3:nazevZdroje
Journal of the Korean Physical Society
n3:obor
n17:BM
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n7:2013
n3:svazekPeriodika
62
n3:tvurceVysledku
Arnold, Zdeněk Kamarád, Jiří Pardo, J. A Algarabel, P. A. García-García, A.
n3:wos
000320122700021
s:issn
0374-4884
s:numberOfPages
3
n6:doi
10.3938/jkps.62.1458