Competitive occupying of Fe3+ and Co3+ ions into the lattice B-sites of perovskite crystalline structure

Feng Xiang Liu; Hong Wei Ma; Zhan Ping Li; Zhi Ming Gao

doi:10.14102/j.cnki.0254-5861.2011-1279

Competitive occupying of Fe³⁺ and Co³⁺ ions into the lattice B-sites of perovskite crystalline structure

Feng Xiang Liu, Hong Wei Ma, Zhan Ping Li, Zhi Ming Gao^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Perovskite-type oxide has a general formula ABO₃. Both the lattice A- and lattice B-sites can be occupied by two kinds of metallic ions, forming substituted perovskites such as La_1-xSr_xCoO_3-d and LaFe_xCo_1-xO₃. In the present work, we aim to investigate competitive occupying of Fe³⁺ and Co³⁺ ions into the lattice B-sites of perovskite LaFe_zCo_1-zO₃ formed under the condition of excess feeding of Fe³⁺ and Co²⁺ ions relative to the La³⁺ ions. For this purpose, standard curve of normalized cell volumes (NCVs) of a defined series of perovskites LaFe_xCo_1-xO₃ versus the x values was plotted. Lattice occupancy of Fe³⁺ ions at the B-sites of the perovskite LaFe_zCo_1-zO₃ was then determined from the standard curve. It is proved that Fe³⁺ ions were capable of occupying preferentially into the lattice B-sites of the perovskite crystalline structure.

Original language	English
Pages (from-to)	217-228
Number of pages	12
Journal	Jiegou Huaxue
Volume	36
Issue number	2
DOIs	https://doi.org/10.14102/j.cnki.0254-5861.2011-1279
Publication status	Published - 15 Feb 2017

Keywords

Cell volume
Lattice occupancy
Perovskite
The rietveld method
XRD

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10.14102/j.cnki.0254-5861.2011-1279

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title = "Competitive occupying of Fe3+ and Co3+ ions into the lattice B-sites of perovskite crystalline structure",

abstract = "Perovskite-type oxide has a general formula ABO3. Both the lattice A- and lattice B-sites can be occupied by two kinds of metallic ions, forming substituted perovskites such as La1-xSrxCoO3-d and LaFexCo1-xO3. In the present work, we aim to investigate competitive occupying of Fe3+ and Co3+ ions into the lattice B-sites of perovskite LaFezCo1-zO3 formed under the condition of excess feeding of Fe3+ and Co2+ ions relative to the La3+ ions. For this purpose, standard curve of normalized cell volumes (NCVs) of a defined series of perovskites LaFexCo1-xO3 versus the x values was plotted. Lattice occupancy of Fe3+ ions at the B-sites of the perovskite LaFezCo1-zO3 was then determined from the standard curve. It is proved that Fe3+ ions were capable of occupying preferentially into the lattice B-sites of the perovskite crystalline structure.",

keywords = "Cell volume, Lattice occupancy, Perovskite, The rietveld method, XRD",

author = "Liu, {Feng Xiang} and Ma, {Hong Wei} and Li, {Zhan Ping} and Gao, {Zhi Ming}",

year = "2017",

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doi = "10.14102/j.cnki.0254-5861.2011-1279",

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T1 - Competitive occupying of Fe3+ and Co3+ ions into the lattice B-sites of perovskite crystalline structure

AU - Liu, Feng Xiang

AU - Ma, Hong Wei

AU - Li, Zhan Ping

AU - Gao, Zhi Ming

PY - 2017/2/15

Y1 - 2017/2/15

N2 - Perovskite-type oxide has a general formula ABO3. Both the lattice A- and lattice B-sites can be occupied by two kinds of metallic ions, forming substituted perovskites such as La1-xSrxCoO3-d and LaFexCo1-xO3. In the present work, we aim to investigate competitive occupying of Fe3+ and Co3+ ions into the lattice B-sites of perovskite LaFezCo1-zO3 formed under the condition of excess feeding of Fe3+ and Co2+ ions relative to the La3+ ions. For this purpose, standard curve of normalized cell volumes (NCVs) of a defined series of perovskites LaFexCo1-xO3 versus the x values was plotted. Lattice occupancy of Fe3+ ions at the B-sites of the perovskite LaFezCo1-zO3 was then determined from the standard curve. It is proved that Fe3+ ions were capable of occupying preferentially into the lattice B-sites of the perovskite crystalline structure.

AB - Perovskite-type oxide has a general formula ABO3. Both the lattice A- and lattice B-sites can be occupied by two kinds of metallic ions, forming substituted perovskites such as La1-xSrxCoO3-d and LaFexCo1-xO3. In the present work, we aim to investigate competitive occupying of Fe3+ and Co3+ ions into the lattice B-sites of perovskite LaFezCo1-zO3 formed under the condition of excess feeding of Fe3+ and Co2+ ions relative to the La3+ ions. For this purpose, standard curve of normalized cell volumes (NCVs) of a defined series of perovskites LaFexCo1-xO3 versus the x values was plotted. Lattice occupancy of Fe3+ ions at the B-sites of the perovskite LaFezCo1-zO3 was then determined from the standard curve. It is proved that Fe3+ ions were capable of occupying preferentially into the lattice B-sites of the perovskite crystalline structure.

KW - Cell volume

KW - Lattice occupancy

KW - Perovskite

KW - The rietveld method

KW - XRD

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DO - 10.14102/j.cnki.0254-5861.2011-1279

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SN - 0254-5861

VL - 36

SP - 217

EP - 228

JO - Jiegou Huaxue

JF - Jiegou Huaxue

IS - 2

ER -

Competitive occupying of Fe³⁺ and Co³⁺ ions into the lattice B-sites of perovskite crystalline structure

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Keywords

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