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Title: Magnetic and magnetodielectric properties of erbium iron garnet ceramic

Abstract

An Er{sub 3}Fe{sub 5}O{sub 12} ceramic has been sintered in oxygen atmosphere at 1400 Degree-Sign C for dielectric measurements. Its structural quality at room temperature has been checked by combining transmission electron microscopy and X-ray diffraction. It crystallizes in the cubic space group Ia3d with a = 12.3488(1). The dielectric permittivity ({epsilon} Prime ) and losses (tan {delta}) measurements as a function of temperature reveal the existence of two anomalies, a broad one between 110 K and 80 K, attributed to the Er{sup 3+} spin reorientation, and a second sharper feature at about 45 K associated to the appearance of irreversibility on the magnetic susceptibility curves. In contrast to the lack of magnetic field impact on {epsilon} Prime for the former anomaly, a complex magnetic field effect has been evidenced below 45 K. The isothermal {epsilon} Prime (H) curves show the existence of positive magnetodielectric effect, reaching a maximum of 0.14% at 3 T and 10 K. Its magnitude decreases as H is further increased. Interestingly, for the lowest H values, a linear regime in the {epsilon} Prime (H) curve is observed. From this experimental study, it is concluded that the {epsilon} Prime anomaly, starting above the compensation temperature T{submore » c} (75 K) and driven by the internal magnetic field, is not sensitive to an applied external magnetic field. Thus, below 45 K, it is the magnetic structure which is responsible for the coupling between spin and charge in this iron garnet.« less

Authors:
; ; ; ;  [1]; ; ;  [2]
  1. Laboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, 6 bd du Marechal Juin, F-14050 Caen Cedex 4 (France)
  2. EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium)
Publication Date:
OSTI Identifier:
22102224
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 113; Journal Issue: 3; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; COUPLING; CRYSTALLIZATION; DIELECTRIC MATERIALS; ERBIUM COMPOUNDS; ERBIUM IONS; FERRITE GARNETS; MAGNETIC FIELDS; MAGNETIC SUSCEPTIBILITY; PERMITTIVITY; SINTERING; SPACE GROUPS; SPIN; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Maignan, A., Singh, K., Simon, Ch., Lebedev, O. I., Martin, C., Tan, H., Verbeeck, J., and Van Tendeloo, G. Magnetic and magnetodielectric properties of erbium iron garnet ceramic. United States: N. p., 2013. Web. doi:10.1063/1.4776716.
Maignan, A., Singh, K., Simon, Ch., Lebedev, O. I., Martin, C., Tan, H., Verbeeck, J., & Van Tendeloo, G. Magnetic and magnetodielectric properties of erbium iron garnet ceramic. United States. https://doi.org/10.1063/1.4776716
Maignan, A., Singh, K., Simon, Ch., Lebedev, O. I., Martin, C., Tan, H., Verbeeck, J., and Van Tendeloo, G. 2013. "Magnetic and magnetodielectric properties of erbium iron garnet ceramic". United States. https://doi.org/10.1063/1.4776716.
@article{osti_22102224,
title = {Magnetic and magnetodielectric properties of erbium iron garnet ceramic},
author = {Maignan, A. and Singh, K. and Simon, Ch. and Lebedev, O. I. and Martin, C. and Tan, H. and Verbeeck, J. and Van Tendeloo, G.},
abstractNote = {An Er{sub 3}Fe{sub 5}O{sub 12} ceramic has been sintered in oxygen atmosphere at 1400 Degree-Sign C for dielectric measurements. Its structural quality at room temperature has been checked by combining transmission electron microscopy and X-ray diffraction. It crystallizes in the cubic space group Ia3d with a = 12.3488(1). The dielectric permittivity ({epsilon} Prime ) and losses (tan {delta}) measurements as a function of temperature reveal the existence of two anomalies, a broad one between 110 K and 80 K, attributed to the Er{sup 3+} spin reorientation, and a second sharper feature at about 45 K associated to the appearance of irreversibility on the magnetic susceptibility curves. In contrast to the lack of magnetic field impact on {epsilon} Prime for the former anomaly, a complex magnetic field effect has been evidenced below 45 K. The isothermal {epsilon} Prime (H) curves show the existence of positive magnetodielectric effect, reaching a maximum of 0.14% at 3 T and 10 K. Its magnitude decreases as H is further increased. Interestingly, for the lowest H values, a linear regime in the {epsilon} Prime (H) curve is observed. From this experimental study, it is concluded that the {epsilon} Prime anomaly, starting above the compensation temperature T{sub c} (75 K) and driven by the internal magnetic field, is not sensitive to an applied external magnetic field. Thus, below 45 K, it is the magnetic structure which is responsible for the coupling between spin and charge in this iron garnet.},
doi = {10.1063/1.4776716},
url = {https://www.osti.gov/biblio/22102224}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 3,
volume = 113,
place = {United States},
year = {Mon Jan 21 00:00:00 EST 2013},
month = {Mon Jan 21 00:00:00 EST 2013}
}