# Phase Separation Phenomena in Lightly Cu-Doped A-Site-Ordered Quadruple Perovskite NdMn7O12

https://mdr.nims.go.jp/datasets/5e338aa1-e7eb-45e9-8c47-1a3e2bf486e4

## File

- [Molecules-V30-04561-v2-NdMn7O12-Cu.pdf](https://mdr.nims.go.jp/filesets/61082d72-8fd0-40f6-a55a-1418024c32e8/download) ([Detail](https://mdr.nims.go.jp/filesets/61082d72-8fd0-40f6-a55a-1418024c32e8.md))

## Id

5e338aa1-e7eb-45e9-8c47-1a3e2bf486e4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-16T03:24:18.435389Z

## Updated at

2025-12-16T05:09:42.078482Z

## Published at

2025-12-19T05:11:43.391420Z

## Doi



## First published url

https://doi.org/10.3390/molecules30234561

## Date published

2025-11-26

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Phase Separation Phenomena in Lightly Cu-Doped A-Site-Ordered Quadruple Perovskite
    NdMn7O12
  title_type: original
  lang: en

## Description

- description: 'A-site-ordered quadruple perovskite manganites, AMn7O12, show many
    interesting physical phenomena. Doping with Cu2+ can result in colossal magnetoresistance
    properties, ferrimagnetism, and additional structural modulations producing electric-dipole
    helicoidal textures. Small-concentration doping was investigated in a limited
    number of systems, e.g., in BiCuxMn7xO12. In this work, we investigated solid
    solutions of NdCuxMn7-xO12 with x = 0.1, 0.2, and 0.3, prepared at 6 GPa and 1500
    K. Specific heat measurements detected three magnetic transitions in x = 0 (at
    TN3 = 9 K, TN2 = 12 K, and TN1 = 84 K) and two transition in x = 0.1 (at TN2 =
    10 K and TN1 = 78 K); while only one transition was found in x = 0.2 (TN1 = 72
    K) and x = 0.3 (TN1 = 65 K). Differential scanning calorimetry (DSC) measurements
    showed sharp and strong peaks near TOO = 664 K in x = 0 corresponding to an orbital-order
    (OO) structural transition from I2/m to Im-3 symmetry. DSC anomalies were significantly
    broadened, and their intensities were significantly reduced in x = 0.1–0.3, and
    structural transitions were observed near TOO = 630 K in x = 0.1, TOO = 600 K
    in x = 0.2, and TOO = 570 K in x = 0.3. '
  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
- name: Ran Liu
  role: author
  orcid: https://orcid.org/0000-0002-1659-2325
  organization: National Institute for Materials Science
- name: Kazunari Yamaura
  role: author
  orcid: https://orcid.org/0000-0003-0390-8244
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: A-site-ordered quadruple perovskites
  schema: not_defined
- subject: orbital order
  schema: not_defined
- subject: phase separation
  schema: not_defined
- subject: high-pressure synthesis
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-11-26

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Molecules
  issn: '14203049'
  volume: '30'
  issue: '23'
  article_number: '4561'

## Conference



## Related item



## Funding

- identifier: JP25K01657
  funder_name: Grant-in-Aid for Scientific Research

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 61082d72-8fd0-40f6-a55a-1418024c32e8
  filename: Molecules-V30-04561-v2-NdMn7O12-Cu.pdf
  content_type: application/pdf
  size: 1718894
  md5: 572e6d601e3c094b438cd0fab8db4581

## Thumbnail

fileset_id: 61082d72-8fd0-40f6-a55a-1418024c32e8
filename: Molecules-V30-04561-v2-NdMn7O12-Cu.pdf