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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F12%3A00390393%21RIV13-AV0-68378271
rdf:type
n6:Vysledek skos:Concept
dcterms:description
We have studied experimentally the responses of high-quality single crystals of stoichiometric synthetic magnetite to applied weak dc and ac magnetic fields in the range of 6–60 K, far below the Verwey transition. The results can be compared to so-called magnetic after effects (MAE) measurements, which are the most extensive magnetic measurements of magnetite at these temperatures. We present a novel point of view on the relaxation phenomena encountered at these temperatures—the low-temperature anomaly, addressing the striking difference between the results of conventional ac susceptibility measurements and those accompanying MAE measurements, i.e., periodic excitations with strong magnetic pulses. We also draw a connection between this anomaly and the so-called glasslike transition, and discuss possible mechanisms responsible for these effects. We have studied experimentally the responses of high-quality single crystals of stoichiometric synthetic magnetite to applied weak dc and ac magnetic fields in the range of 6–60 K, far below the Verwey transition. The results can be compared to so-called magnetic after effects (MAE) measurements, which are the most extensive magnetic measurements of magnetite at these temperatures. We present a novel point of view on the relaxation phenomena encountered at these temperatures—the low-temperature anomaly, addressing the striking difference between the results of conventional ac susceptibility measurements and those accompanying MAE measurements, i.e., periodic excitations with strong magnetic pulses. We also draw a connection between this anomaly and the so-called glasslike transition, and discuss possible mechanisms responsible for these effects.
dcterms:title
Low-temperature magnetic anomaly in magnetite Low-temperature magnetic anomaly in magnetite
skos:prefLabel
Low-temperature magnetic anomaly in magnetite Low-temperature magnetic anomaly in magnetite
skos:notation
RIV/68378271:_____/12:00390393!RIV13-AV0-68378271
n6:predkladatel
n7:ico%3A68378271
n3:aktivita
n19:P n19:Z
n3:aktivity
P(ME10069), Z(AV0Z10100520)
n3:cisloPeriodika
21
n3:dodaniDat
n10:2013
n3:domaciTvurceVysledku
n5:5606276 n5:3913112
n3:druhVysledku
n15:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
147534
n3:idVysledku
RIV/68378271:_____/12:00390393
n3:jazykVysledku
n14:eng
n3:klicovaSlova
single-crystal; Verwey transition; FE3O4; susceptibility; conduction; anisotropy; growth
n3:klicoveSlovo
n4:growth n4:Verwey%20transition n4:FE3O4 n4:conduction n4:susceptibility n4:anisotropy n4:single-crystal
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[1E1682394F64]
n3:nazevZdroje
Physical Review. B
n3:obor
n17:BM
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n8:ME10069
n3:rokUplatneniVysledku
n10:2012
n3:svazekPeriodika
86
n3:tvurceVysledku
Honig, J. M. Kozlowski, A. Švindrych, Zdeněk Janů, Zdeněk
n3:wos
000312023100001
n3:zamer
n13:AV0Z10100520
s:issn
1098-0121
s:numberOfPages
5
n16:doi
10.1103/PhysRevB.86.214406