Thermal annealing effects in polycrystalline EuTiO3 and Eu2Ti2O7

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dc.contributor.authorSchell, Julianacs
dc.contributor.authorKamba, Stanislavcs
dc.contributor.authorKachlík, Martincs
dc.contributor.authorMaca, Karelcs
dc.contributor.authorDrahokoupil, Jancs
dc.contributor.authorRano, B. Rahmancs
dc.contributor.authorGonçalves, Joo Nuno Santoscs
dc.contributor.authorDang, Thien Thanhcs
dc.contributor.authorCosta, Angelocs
dc.contributor.authorNoll, Corneliacs
dc.contributor.authorVianden, Reinercs
dc.contributor.authorLupascu, Doru C.cs
dc.coverage.issue12cs
dc.coverage.volume9cs
dc.date.accessioned2020-08-04T11:04:20Z
dc.date.available2020-08-04T11:04:20Z
dc.date.issued2019-12-01cs
dc.description.abstractUsing time-differential perturbed angular correlation of gamma rays, we investigated the electric-field gradient of polycrystalline EuTiO3 and Eu2Ti2O7, with Hf-181(Ta-181) as a probe, following different thermal treatments. The measurements were performed at ISOLDE-CERN following 80 keV implantation at the Bonn Radioisotope Separator. The experimental results indicated successful induction of different phases in the implantation recovery process at 1273 and 1373 K. These observations were combined with ab initio calculations and X-ray diffraction measurements. A comparison of ab initio calculated electric-field gradients with the measured values discriminates between different structures and defects and rules out many possible cases. The Ta probe at the Ti site in the Eu2Ti2O7 phase is found to be the most probable case of site occupation after annealing at 1373 K, while annealing at 1273 K keeps EuTiO3 in the vicinity of the Ta probe. A discussion of the hyperfine interactions that promote variation in the interaction strength at the Ta-181 site is presented.en
dc.formattextcs
dc.format.extent1-7cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationAIP Advances. 2019, vol. 9, issue 12, p. 1-7.en
dc.identifier.doi10.1063/1.5115466cs
dc.identifier.issn2158-3226cs
dc.identifier.other161367cs
dc.identifier.urihttp://hdl.handle.net/11012/184685
dc.language.isoencs
dc.publisherAIP Publishingcs
dc.relation.ispartofAIP Advancescs
dc.relation.urihttps://aip.scitation.org/doi/10.1063/1.5115466cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2158-3226/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectMAGNETIC-PROPERTIESen
dc.subjectGRADIENTen
dc.subjectCRYSTALen
dc.subjectTDPACen
dc.subjectPUREen
dc.titleThermal annealing effects in polycrystalline EuTiO3 and Eu2Ti2O7en
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-161367en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:04:20en
sync.item.modts2020.08.04 12:35:06en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Inovační technologie v keramicecs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. ÚMVI-odbor keramiky a polymerůcs
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