Crystallographic and magnetic structure study in SrCoO3-x by high resolution x-ray and neutron powder diffraction

Simple item page
dc.contributor.authorChang, FFen_AU
dc.contributor.authorReehuis, Men_AU
dc.contributor.authorHester, JRen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorXiang, Fen_AU
dc.contributor.authorWang, Xen_AU
dc.contributor.authorSeidel, Jen_AU
dc.contributor.authorUlrich, Cen_AU
dc.date.accessioned2021-12-13T04:06:27Zen_AU
dc.date.available2021-12-13T04:06:27Zen_AU
dc.date.issued2016-02-04en_AU
dc.date.statistics2021-09-22en_AU
dc.description.abstractTransition metal oxides (TMOs) represent a wide set of materials with a broad range of functionalities, including superconductivity, magnetism, and ferroelectricity, which can be tuned by careful choice of parameters such as strain, oxygen content, and applied electric and magnetic fields. This tunability makes TMO’s ideal candidate materials for use in developing novel information and energy technologies and SrCoO3 provides a particularly interesting system for investigation due to its propensity to form oxygen-vacancy-ordered structures as the oxygen content is decreased. The ties between structural and functional properties of this material are obvious as it undergoes simultaneously structural and magnetic phase transitions between two topotactic phases: from a ferromagnetic perovskite phase at SrCoO3.0 to the antiferromagnetic brownmillerite SrCoO2.5. In this study we have determined their crystallographic and magnetic structures of SrCoO2.50, SrCoO2.875, and cubic SrCoO3.00 using high resolution X-ray and neutron powder diffraction from 4 K to 600 K. The correct structure of oxygen-deficient end-member SrCoO2.5 was determined in space group of Imma, instead of Pnma or Ima2 proposed previously, with G-type antiferromagnetic order up to TN = 570 K. In SrCoO2.875, clear peak splitting was observed from (200) in cubic phase to (004) and (440) in tetragonal phase, indicating that the precise structure is I4/mmm with a = b = 10.829(9) Å and c = 7.684(2) Å at 95 K, and the corresponding magnetic structure is ferromagnetic with 1.86(4) μB per formula, in accordance to a spin configuration of cobalt ions with an intermediate spin state of both on Co3+ and on Co4+. The end member SrCoO3.00 possesses a simple cubic crystal structure with a = 3.817(2) Å at 95 K, and ferromagnetic order up to 280 K. The magnetic moment of 1.96(8) μB /Co4+ corresponds to an intermediate spin state of Co4+.en_AU
dc.identifier.citationChang, F., Reehuis, M., Hester, J., Avdeev, M., Xiang, F., Wang, X., Seidel, J. & Ulrich, C. (2016). Crystallographic and magnetic structure study in SrCoO3-x by high resolution x-ray and neutron powder diffraction. Paper presented to the 40th Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, NSW, 2nd February – 5th February, 2016, (pp. 46-47). Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2016/Wagga_2016_Conference_Handbook.pdfen_AU
dc.identifier.conferenceenddate5 February 2016en_AU
dc.identifier.conferencename40th Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, NSWen_AU
dc.identifier.conferencestartdate2 February 2016en_AU
dc.identifier.isbn978-0-646-96433-1en_AU
dc.identifier.otherTN2en_AU
dc.identifier.pagination46-47en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2016/Wagga_2016_Conference_Handbook.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12453en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectCharged particlesen_AU
dc.subjectIonsen_AU
dc.subjectMagnetismen_AU
dc.subjectMetalsen_AU
dc.subjectMineralsen_AU
dc.subjectOxide mineralsen_AU
dc.subjectParticle propertiesen_AU
dc.subjectPerovskitesen_AU
dc.subjectPhysical propertiesen_AU
dc.subjectScatteringen_AU
dc.titleCrystallographic and magnetic structure study in SrCoO3-x by high resolution x-ray and neutron powder diffractionen_AU
dc.typeConference Abstracten_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Wagga_2016_Conference_Handbook(2).pdf
Size:
2.22 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications