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  • A powder X-ray diffraction study, combined with magnetic susceptibility and electric transport measurements, was performed on a series of LnCoO3 perovskites (Ln=Y,Dy,Gd,Sm,Pr and La) over a temperature range 100-1000 K. Temperature dependence of the observed thermal expansion was modeled as a sum of three contributions: (1) weghted sum of lattice expanisons of the cobaltite in the diamagnetic low spin state and in the intermediate (IS) or high (HS) spin state. (2) An anomalous expansion due to the inceasing population of excited (IS or HS) states of Co3+ ions over the course of the diamagnetic-paramagnetic transition. (3) An anomalous expansion due to excitations of Co3+ ions to another paramagnetic state sccompsnied by an insulator-metal transition
  • A powder X-ray diffraction study, combined with magnetic susceptibility and electric transport measurements, was performed on a series of LnCoO3 perovskites (Ln=Y,Dy,Gd,Sm,Pr and La) over a temperature range 100-1000 K. Temperature dependence of the observed thermal expansion was modeled as a sum of three contributions: (1) weghted sum of lattice expanisons of the cobaltite in the diamagnetic low spin state and in the intermediate (IS) or high (HS) spin state. (2) An anomalous expansion due to the inceasing population of excited (IS or HS) states of Co3+ ions over the course of the diamagnetic-paramagnetic transition. (3) An anomalous expansion due to excitations of Co3+ ions to another paramagnetic state sccompsnied by an insulator-metal transition (en)
  • Prášková rentgenová difrakce kombinovaná s měřeními magnetické susceptibility a elektrického transportu byla provedena na sérii LnCoO3 perovskitů (Ln= Y,Dy,Gd,Sm,Nd,Pr a La) v teplotním rozsahu 100-1000 K. Teplotní závislost pozorované dilatace byla modelována jako suma tří příspěvků: 1) vžená suma mřížkové dilatace kobaltitu v nízkém (LS) a středním (IS) nebo vysokém (HS) spinu. 2) Anomální dilatace diky vzrůstající populaci excitovaných (IS nebo HS) stavů Co3+ iontů během přechodu z diamagnetického stavu do paramagnetického. 3) Anomální dilatace díky excitaci Co3+ iontu do dalšího paramagnetického stavu doprovázeného přechodem izolátor-kov (cs)
Title
  • Structural anomalies associated with the electronic and spin transitions in LnCoO3.
  • Structural anomalies associated with the electronic and spin transitions in LnCoO3. (en)
  • Strukturní anomálie spojené s elektronickým a spinovým přechodem v LnCoO3. (cs)
skos:prefLabel
  • Structural anomalies associated with the electronic and spin transitions in LnCoO3.
  • Structural anomalies associated with the electronic and spin transitions in LnCoO3. (en)
  • Strukturní anomálie spojené s elektronickým a spinovým přechodem v LnCoO3. (cs)
skos:notation
  • RIV/68378271:_____/05:00023762!RIV06-AV0-68378271
http://linked.open.../vavai/riv/strany
  • 213;220
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(AV0Z10100521)
http://linked.open...iv/cisloPeriodika
  • -
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 544916
http://linked.open...ai/riv/idVysledku
  • RIV/68378271:_____/05:00023762
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • thermal expansion; spin-state transition; insulator-metal transition; rare-earth perovskite cobaltites (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [447918771ADC]
http://linked.open...i/riv/nazevZdroje
  • European Physical Journal B
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 47
http://linked.open...iv/tvurceVysledku
  • Knížek, Karel
  • Jirák, Zdeněk
  • Maryško, Miroslav
  • Veverka, Miroslav
  • Hejtmánek, Jiří
  • Maris, G.
  • Palstra, T. T. M.
http://linked.open...n/vavai/riv/zamer
issn
  • 1434-6028
number of pages
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