# The Conversion Polymorphism of Perovskite Phases in the BiCrO3–BiFeO3 System

https://mdr.nims.go.jp/datasets/ca016c92-1355-440a-b332-d810166f8122

## File

- [Inorganics-V13-91-BiCrO3-BiFeO3.pdf](https://mdr.nims.go.jp/filesets/dbe639e0-852c-4fdc-a7ad-4d222741a44b/download) ([Detail](https://mdr.nims.go.jp/filesets/dbe639e0-852c-4fdc-a7ad-4d222741a44b.md))

## Id

ca016c92-1355-440a-b332-d810166f8122

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-06T07:32:19.556168Z

## Updated at

2025-11-07T23:30:07.682883Z

## Published at

2025-11-07T23:21:17.701838Z

## Doi



## First published url

https://doi.org/10.3390/inorganics13030091

## Date published

2025-03-18

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: The Conversion Polymorphism of Perovskite Phases in the BiCrO3–BiFeO3 System
  title_type: original
  lang: en

## Description

- description: Perovskite-type materials containing Bi3+ cations at the A sites are
    interesting from viewpoints of applications and fundamental science as the lone
    pair of Bi3+ cations often stabilizes polar, ferro-electric structures. It can
    be illustrated by a lot of discoveries of different new functionalities in bulk
    and thin films of BiFeO3 and its derivatives. In this work, we investigated solid
    solutions of BiCr1-xFexO3 with 0.1 < x < 0.4 prepared by a high-pressure (HP)
    method and post-synthesis an-nealing at ambient pressure (AP). HP-BiCr1-xFexO3
    modifications with 0.1 < x < 0.3 were mixtures of two phases with space groups
    C2/c and Pbam, and the amount of the C2/c phase decreased with increasing x. The
    amount of the C2/c phase was also significantly decreased in AP-BiCr1-xFexO3 modifications,
    and the C2/c phase almost disappeared in AP-BiCr1-xFexO3 with 0.2 < x < 0.3. Fun-damental,
    strong reflections of HP-BiCr1-xFexO3 and AP-BiCr1-xFexO3 were almost unchanged;
    on the other hand, weak superstructure reflections were different and showed clear
    signs of strong anisotropic broadening and incommensurate positions. These structural
    features prevented us from determining their room-temperature structures. On the
    other hand, HP-BiCr1-xFexO3 and AP-BiCr1-xFexO3 showed high-temperature structural
    phase transitions to the GdFeO3-type Pnma modification at Tsrt = 450 K (x = 0.1),
    Tsrt = 480 K (x = 0.2), Tsrt = 510 K (x = 0.3), and Tsrt = 546 K (x = 0.4). Crystal
    structures of the GdFeO3-type Pnma modifications of all the samples were investigated
    by synchrotron powder X-ray diffraction. Magnetic properties of HP-BiCr1-xFexO3
    and AP-BiCr1-xFexO3 were quite close to each other (HP vs AP), and the x = 0.2
    samples demonstrated negative magnetization phenomena without signs of the exchange
    bias effect.
  description_type: abstract
  lang: und

## Creator

- name: Alexei A. Belik
  role: author
  orcid: https://orcid.org/0000-0001-9031-2355
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: multiferroics
  schema: not_defined
- subject: doped BiFeO3
  schema: not_defined
- subject: BiCrO3
  schema: not_defined
- subject: high-pressure synthesis
  schema: not_defined
- subject: irreversible transformations
  schema: not_defined
- subject: conversion polymorphism
  schema: not_defined
- subject: incommensurate structures
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Inorganics
  issn: '23046740'
  volume: '13'
  issue: '3'
  article_number: '91'

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## Specimen



## Chemical composition



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## Fileset

- id: dbe639e0-852c-4fdc-a7ad-4d222741a44b
  filename: Inorganics-V13-91-BiCrO3-BiFeO3.pdf
  content_type: application/pdf
  size: 4463089
  md5: '08c85c41ad61b68876bec1615995181b'

## Thumbnail

fileset_id: dbe639e0-852c-4fdc-a7ad-4d222741a44b
filename: Inorganics-V13-91-BiCrO3-BiFeO3.pdf