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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F13%3A00399505%21RIV14-MSM-68378271
rdf:type
n8:Vysledek skos:Concept
dcterms:description
The phase purity and the lattice dynamics in bulk EuTiO3 were investigated both microscopically, using x-ray and neutron diffraction, 151 Eu-Mössbauer spectroscopy, and 151 Eu nuclear inelastic scattering, and macroscopically using calorimetry, resonant ultrasound spectroscopy, and magnetometry. A stiffening on heating around room temperature is indicative of a phase transition similar to the one observed in SrTiO3, however, although previous studies reported the structural phase transition to the tetragonal I4/mcm phase our detailed sample purity analysis and thorough structural studies using comple mentary techniques did not confirm a direct phase transition. Instead, in the same temperature range, Eu delocalization is observed which might explain the lattice dynamical instabilities. The phase purity and the lattice dynamics in bulk EuTiO3 were investigated both microscopically, using x-ray and neutron diffraction, 151 Eu-Mössbauer spectroscopy, and 151 Eu nuclear inelastic scattering, and macroscopically using calorimetry, resonant ultrasound spectroscopy, and magnetometry. A stiffening on heating around room temperature is indicative of a phase transition similar to the one observed in SrTiO3, however, although previous studies reported the structural phase transition to the tetragonal I4/mcm phase our detailed sample purity analysis and thorough structural studies using comple mentary techniques did not confirm a direct phase transition. Instead, in the same temperature range, Eu delocalization is observed which might explain the lattice dynamical instabilities.
dcterms:title
Lattice instabilities in bulk EuTiO3. Lattice instabilities in bulk EuTiO3.
skos:prefLabel
Lattice instabilities in bulk EuTiO3. Lattice instabilities in bulk EuTiO3.
skos:notation
RIV/68378271:_____/13:00399505!RIV14-MSM-68378271
n8:predkladatel
n17:ico%3A68378271
n4:aktivita
n12:P n12:I
n4:aktivity
I, P(ED1.1.00/02.0068), P(GAP204/12/1163), P(LD11035), P(LD12026)
n4:cisloPeriodika
14
n4:dodaniDat
n9:2014
n4:domaciTvurceVysledku
n10:7348320
n4:druhVysledku
n15:J
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n6:predkladatel
n4:idSjednocenehoVysledku
84418
n4:idVysledku
RIV/68378271:_____/13:00399505
n4:jazykVysledku
n19:eng
n4:klicovaSlova
structural phase transition; phonons; lattice dynamics
n4:klicoveSlovo
n5:phonons n5:lattice%20dynamics n5:structural%20phase%20transition
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[4D195430226E]
n4:nazevZdroje
Physical Review. B
n4:obor
n13:BM
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
11
n4:projekt
n11:LD12026 n11:ED1.1.00%2F02.0068 n11:GAP204%2F12%2F1163 n11:LD11035
n4:rokUplatneniVysledku
n9:2013
n4:svazekPeriodika
88
n4:tvurceVysledku
Ležaič, M. Rushchanskii, K. Z. Kachlik, M. Bessas, D. Kamba, Stanislav Sergueev, I. Hermann, R. P. Bednarcik, J. Gourdon, O. Disch, S. Máca, K.
n4:wos
000326159200002
s:issn
1098-0121
s:numberOfPages
9
n14:doi
10.1103/PhysRevB.88.144308