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Title: Morin-like spin canting in the magnetic CaFe{sub 5}O{sub 7} ferrite: A combined neutron and Mössbauer study

Abstract

Magnetic structure of CaFe{sub 5}O{sub 7} ferrite has been studied jointly from neutron powder diffraction data and spectroscopic Mössbauer measurements in the thermal range from 5 to 500 K. This coupled work highlights three distinct magnetic domains around two specific temperatures: T{sub M}=125 K and T{sub N}=360 K. The latter corroborates the structural monoclinic-orthorhombic transition previously reported by transmission electron microscopy techniques and X-ray thermodiffractometry. Complementary heat capacity measurements have confirmed this first order transition with a sharp peak at 360 K. Interestingly, this large study has revealed a second magnetic transition associated to a spin rotation at 125 K similar to this one reported by Morin in α-Fe{sub 2}O{sub 3} hematite at T{sub M}=260 K. - Graphical abstract: Magnetic structure of CaFe{sub 5}O{sub 7} ferrite has been studied jointly from neutron powder diffraction data and spectroscopic Mössbauer measurements in the thermal range from 5 to 500 K. This coupled work highlights three distinct magnetic domains around two specific temperatures: T{sub M}=125 K and T{sub N}=360 K. Interestingly, this large study has revealed a magnetic transition associated to a spin rotation at 125 K similar to this one reported by Morin in α-Fe{sub 2}O{sub 3} hematite at T{sub M}=260 K.

Authors:
; ; ;  [1];  [2];  [1];  [3];  [1]
  1. Laboratoire CRISMAT ENSICAEN UMR CNRS 6508, 6 Boulevard du Maréchal Juin, 14050 Caen Cedex 04 (France)
  2. Institut des Molécules et Matériaux du Mans, IMMM UMR CNRS 6283, Avenue Olivier Messiaen, 72085 Le Mans (France)
  3. Institut Laue-Langevin, 71 avenue des Martyrs, 38042 Grenoble Cedex 9 (France)
Publication Date:
OSTI Identifier:
22658215
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 247; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CALCIUM COMPOUNDS; EXPERIMENTAL DATA; FERRITES; IRON OXIDES; MORIN; NEUTRON DIFFRACTION; SPECIFIC HEAT; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Delacotte, C., Bréard, Y., Caignaert, V., Hardy, V., Greneche, J.M., Hébert, S., Suard, E., and Pelloquin, D. Morin-like spin canting in the magnetic CaFe{sub 5}O{sub 7} ferrite: A combined neutron and Mössbauer study. United States: N. p., 2017. Web. doi:10.1016/J.JSSC.2016.12.021.
Delacotte, C., Bréard, Y., Caignaert, V., Hardy, V., Greneche, J.M., Hébert, S., Suard, E., & Pelloquin, D. Morin-like spin canting in the magnetic CaFe{sub 5}O{sub 7} ferrite: A combined neutron and Mössbauer study. United States. doi:10.1016/J.JSSC.2016.12.021.
Delacotte, C., Bréard, Y., Caignaert, V., Hardy, V., Greneche, J.M., Hébert, S., Suard, E., and Pelloquin, D. Wed . "Morin-like spin canting in the magnetic CaFe{sub 5}O{sub 7} ferrite: A combined neutron and Mössbauer study". United States. doi:10.1016/J.JSSC.2016.12.021.
@article{osti_22658215,
title = {Morin-like spin canting in the magnetic CaFe{sub 5}O{sub 7} ferrite: A combined neutron and Mössbauer study},
author = {Delacotte, C. and Bréard, Y. and Caignaert, V. and Hardy, V. and Greneche, J.M. and Hébert, S. and Suard, E. and Pelloquin, D.},
abstractNote = {Magnetic structure of CaFe{sub 5}O{sub 7} ferrite has been studied jointly from neutron powder diffraction data and spectroscopic Mössbauer measurements in the thermal range from 5 to 500 K. This coupled work highlights three distinct magnetic domains around two specific temperatures: T{sub M}=125 K and T{sub N}=360 K. The latter corroborates the structural monoclinic-orthorhombic transition previously reported by transmission electron microscopy techniques and X-ray thermodiffractometry. Complementary heat capacity measurements have confirmed this first order transition with a sharp peak at 360 K. Interestingly, this large study has revealed a second magnetic transition associated to a spin rotation at 125 K similar to this one reported by Morin in α-Fe{sub 2}O{sub 3} hematite at T{sub M}=260 K. - Graphical abstract: Magnetic structure of CaFe{sub 5}O{sub 7} ferrite has been studied jointly from neutron powder diffraction data and spectroscopic Mössbauer measurements in the thermal range from 5 to 500 K. This coupled work highlights three distinct magnetic domains around two specific temperatures: T{sub M}=125 K and T{sub N}=360 K. Interestingly, this large study has revealed a magnetic transition associated to a spin rotation at 125 K similar to this one reported by Morin in α-Fe{sub 2}O{sub 3} hematite at T{sub M}=260 K.},
doi = {10.1016/J.JSSC.2016.12.021},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 247,
place = {United States},
year = {Wed Mar 15 00:00:00 EDT 2017},
month = {Wed Mar 15 00:00:00 EDT 2017}
}