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Controlling Phase Assemblage in a Complex Multi‐Cation System: Phase‐Pure Room Temperature Multiferroic (1−x)BiTi(1−y)/2FeyMg(1−y)/2O3–xCaTiO3

A room temperature magnetoelectric multiferroic is of interest as, e.g., magnetoelectric random access memory. Bulk samples of the perovskite (1−)BiTiFeMgO–CaTiO (BTFM–CTO) are simultaneously ferroelectric, weakly ferromagnetic, and magnetoelectric at room temperature. In BTFM–CTO, the volatility of... Full description

Journal Title: Advanced Functional Materials April 2016, Vol.26(15), pp.2523-2531
Main Author: Mandal, Pranab
Other Authors: Pitcher, Michael J. , Alaria, Jonathan , Niu, Hongjun , Zanella, Marco , Claridge, John B. , Rosseinsky, Matthew J.
Format: Electronic Article Electronic Article
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Quelle: Wiley Open Access (John Wiley & Sons, Inc.)
ID: ISSN: 1616-301X ; E-ISSN: 1616-3028 ; DOI: 10.1002/adfm.201504911
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recordid: wj10.1002/adfm.201504911
title: Controlling Phase Assemblage in a Complex Multi‐Cation System: Phase‐Pure Room Temperature Multiferroic (1−x)BiTi(1−y)/2FeyMg(1−y)/2O3–xCaTiO3
format: Article
creator:
  • Mandal, Pranab
  • Pitcher, Michael J.
  • Alaria, Jonathan
  • Niu, Hongjun
  • Zanella, Marco
  • Claridge, John B.
  • Rosseinsky, Matthew J.
subjects:
  • Ferroelectrics
  • Magnetic Impurities
  • Magnetoelectric
  • Powder Neutron Diffraction
  • Room Temperature Multiferroics
ispartof: Advanced Functional Materials, April 2016, Vol.26(15), pp.2523-2531
description: A room temperature magnetoelectric multiferroic is of interest as, e.g., magnetoelectric random access memory. Bulk samples of the perovskite (1−)BiTiFeMgO–CaTiO (BTFM–CTO) are simultaneously ferroelectric, weakly ferromagnetic, and magnetoelectric at room temperature. In BTFM–CTO, the volatility of bismuth oxide, and the complex subsolidus reaction kinetics, cause the formation of a microscopic amount of ferrimagnetic spinel impurity, which complicates the quantitative characterization of their intrinsic magnetic and magnetoelectric properties. Here, a controlled synthesis route to single‐phase bulk samples of BTFM–CTO is devised and their intrinsic properties are determined. For example, the composition = 0.15, = 0.75 shows a saturated magnetization of 0.0097 per Fe, a linear magnetoelectric susceptibility of 0.19(1) ps m, and a polarization of 66 μC cm at room temperature. The onset of weak ferromagnetism and linear magnetoelectric coupling are shown to coincide with the onset of bulk long‐range magnetic order by neutron diffraction. The synthesis strategy developed here will be invaluable as the phase diagram of BTFM–CTO is explored further, and as an example for the synthesis of other compositionally complex BiFeO‐related materials. (1−)BiTiFeMgO–CaTiO are prepared by a synthetic route that balances reaction pathway, starting material reactivity and the loss of volatile BiO.
language:
source: Wiley Open Access (John Wiley & Sons, Inc.)
identifier: ISSN: 1616-301X ; E-ISSN: 1616-3028 ; DOI: 10.1002/adfm.201504911
fulltext: fulltext
issn:
  • 1616-301X
  • 1616301X
  • 1616-3028
  • 16163028
url: Link


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titleControlling Phase Assemblage in a Complex Multi‐Cation System: Phase‐Pure Room Temperature Multiferroic (1−x)BiTi(1−y)/2FeyMg(1−y)/2O3–xCaTiO3
creatorMandal, Pranab ; Pitcher, Michael J. ; Alaria, Jonathan ; Niu, Hongjun ; Zanella, Marco ; Claridge, John B. ; Rosseinsky, Matthew J.
ispartofAdvanced Functional Materials, April 2016, Vol.26(15), pp.2523-2531
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subjectFerroelectrics ; Magnetic Impurities ; Magnetoelectric ; Powder Neutron Diffraction ; Room Temperature Multiferroics
descriptionA room temperature magnetoelectric multiferroic is of interest as, e.g., magnetoelectric random access memory. Bulk samples of the perovskite (1−)BiTiFeMgO–CaTiO (BTFM–CTO) are simultaneously ferroelectric, weakly ferromagnetic, and magnetoelectric at room temperature. In BTFM–CTO, the volatility of bismuth oxide, and the complex subsolidus reaction kinetics, cause the formation of a microscopic amount of ferrimagnetic spinel impurity, which complicates the quantitative characterization of their intrinsic magnetic and magnetoelectric properties. Here, a controlled synthesis route to single‐phase bulk samples of BTFM–CTO is devised and their intrinsic properties are determined. For example, the composition = 0.15, = 0.75 shows a saturated magnetization of 0.0097 per Fe, a linear magnetoelectric susceptibility of 0.19(1) ps m, and a polarization of 66 μC cm at room temperature. The onset of weak ferromagnetism and linear magnetoelectric coupling are shown to coincide with the onset of bulk long‐range magnetic order by neutron diffraction. The synthesis strategy developed here will be invaluable as the phase diagram of BTFM–CTO is explored further, and as an example for the synthesis of other compositionally complex BiFeO‐related materials. (1−)BiTiFeMgO–CaTiO are prepared by a synthetic route that balances reaction pathway, starting material reactivity and the loss of volatile BiO.
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titleControlling Phase Assemblage in a Complex Multi‐Cation System: Phase‐Pure Room Temperature Multiferroic (1−x)BiTi(1−y)/2FeyMg(1−y)/2O3–xCaTiO3
descriptionA room temperature magnetoelectric multiferroic is of interest as, e.g., magnetoelectric random access memory. Bulk samples of the perovskite (1−)BiTiFeMgO–CaTiO (BTFM–CTO) are simultaneously ferroelectric, weakly ferromagnetic, and magnetoelectric at room temperature. In BTFM–CTO, the volatility of bismuth oxide, and the complex subsolidus reaction kinetics, cause the formation of a microscopic amount of ferrimagnetic spinel impurity, which complicates the quantitative characterization of their intrinsic magnetic and magnetoelectric properties. Here, a controlled synthesis route to single‐phase bulk samples of BTFM–CTO is devised and their intrinsic properties are determined. For example, the composition = 0.15, = 0.75 shows a saturated magnetization of 0.0097 per Fe, a linear magnetoelectric susceptibility of 0.19(1) ps m, and a polarization of 66 μC cm at room temperature. The onset of weak ferromagnetism and linear magnetoelectric coupling are shown to coincide with the onset of bulk long‐range magnetic order by neutron diffraction. The synthesis strategy developed here will be invaluable as the phase diagram of BTFM–CTO is explored further, and as an example for the synthesis of other compositionally complex BiFeO‐related materials. (1−)BiTiFeMgO–CaTiO are prepared by a synthetic route that balances reaction pathway, starting material reactivity and the loss of volatile BiO.
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titleControlling Phase Assemblage in a Complex Multi‐Cation System: Phase‐Pure Room Temperature Multiferroic (1−x)BiTi(1−y)/2FeyMg(1−y)/2O3–xCaTiO3
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abstractA room temperature magnetoelectric multiferroic is of interest as, e.g., magnetoelectric random access memory. Bulk samples of the perovskite (1−)BiTiFeMgO–CaTiO (BTFM–CTO) are simultaneously ferroelectric, weakly ferromagnetic, and magnetoelectric at room temperature. In BTFM–CTO, the volatility of bismuth oxide, and the complex subsolidus reaction kinetics, cause the formation of a microscopic amount of ferrimagnetic spinel impurity, which complicates the quantitative characterization of their intrinsic magnetic and magnetoelectric properties. Here, a controlled synthesis route to single‐phase bulk samples of BTFM–CTO is devised and their intrinsic properties are determined. For example, the composition = 0.15, = 0.75 shows a saturated magnetization of 0.0097 per Fe, a linear magnetoelectric susceptibility of 0.19(1) ps m, and a polarization of 66 μC cm at room temperature. The onset of weak ferromagnetism and linear magnetoelectric coupling are shown to coincide with the onset of bulk long‐range magnetic order by neutron diffraction. The synthesis strategy developed here will be invaluable as the phase diagram of BTFM–CTO is explored further, and as an example for the synthesis of other compositionally complex BiFeO‐related materials. (1−)BiTiFeMgO–CaTiO are prepared by a synthetic route that balances reaction pathway, starting material reactivity and the loss of volatile BiO.
doi10.1002/adfm.201504911
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date2016-04