Low-temperature magnetic structure of Ca2Fe2O5 determined by single-crystal neutron diffraction

Simple item page
dc.contributor.authorAuckett, JEen_AU
dc.contributor.authorLing, CDen_AU
dc.contributor.authorMcIntyre, GJen_AU
dc.contributor.authorAvdeev, Men_AU
dc.date.accessioned2021-10-25T02:12:52Zen_AU
dc.date.available2021-10-25T02:12:52Zen_AU
dc.date.issued2014-02-06en_AU
dc.date.statistics2021-09-13en_AU
dc.description.abstractCa2Fe2O5 is a canted antiferromagnet (TN = 720 K) which displays an anomalous elevation in its magnetic susceptibility for 60 K < T < 140 K. [1] Based on susceptibility measurements performed on oriented single crystals, Zhou et al. [2] proposed a reorientation of the antiferromagnetic (AFM) easy-axis from the crystallographic a axis to the c axis below 40 K, proceeding via a region of minimal magnetocrystalline anisotropy in the anomalous temperature interval. In order to test this proposition, we have refined the atomic and magnetic structure of Ca2Fe2O5 against high-quality neutron Laue diffraction data collected on floating-zone-grown single crystals between 10 K and 300 K. An ad hoc sample mount was designed to apply a small (~35 Oe) magnetic field to the sample, ensuring perfect compatibility with the magnetic susceptibility data, which were also collected in a small field. Our refinements against both zero-field and in-field diffraction data reproduce the G-type AFM structure of Ca2Fe2O5 excellently at room temperature, including the known ferromagnetic canting. Careful examination of the refinement results reveals that the material is in fact best described by the room-temperature magnetic structure at all measured temperatures, though in the intermediate temperature interval (measured at T = 100 K) the spins may be less well-ordered due to competing sublattice interactions.en_AU
dc.identifier.citationAuckett, J. E., Ling, C. D., McIntyre, G. J., & Avdeev, M. (2014). Low-temperature magnetic structure of Ca2Fe2O5 determined by single-crystal neutron diffraction. Paper presented at the 38th Annual Condensed Matter and Materials Meeting 2014, Waiheke Island Resort, Waiheke, Auckland, New Zealand, 4th February - 7th February, 2014. Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2014/Wagga2014proceedings.pdfen_AU
dc.identifier.conferenceenddate7 February 2014en_AU
dc.identifier.conferencename38th Annual Condensed Matter and Materials Meeting 2014en_AU
dc.identifier.conferenceplaceAuckland, New Zealanden_AU
dc.identifier.conferencestartdate4 February 2014en_AU
dc.identifier.isbn978-0-646-93339-9en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2014/Wagga2014proceedings.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12076en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectCharged particlesen_AU
dc.subjectCoherent scatteringen_AU
dc.subjectDielectric materialsen_AU
dc.subjectDiffraction methodsen_AU
dc.subjectIonsen_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectMaterialsen_AU
dc.subjectOrientationen_AU
dc.subjectPhysical propertiesen_AU
dc.titleLow-temperature magnetic structure of Ca2Fe2O5 determined by single-crystal neutron diffractionen_AU
dc.typeConference Abstracten_AU
Files
Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
Wagga2014proceedings.pdf
Size:
32.69 MB
Format:
Adobe Portable Document Format
Description:
Download
Thumbnail Image
Name:
editorialnoteandprogram(1).pdf
Size:
232.71 KB
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