# Ferromagnetic Ferroelectricity due to Orbital Ordering

https://mdr.nims.go.jp/datasets/a4e281c4-b79d-4748-af32-75e293dfd76d

## File

- [cm_38_16_161501.pdf](https://mdr.nims.go.jp/filesets/9c2270e3-9055-4921-9f94-9ed987dc7bb3/download) ([Detail](https://mdr.nims.go.jp/filesets/9c2270e3-9055-4921-9f94-9ed987dc7bb3.md))

## Id

a4e281c4-b79d-4748-af32-75e293dfd76d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-21T00:31:03.612871Z

## Updated at

2026-04-21T02:15:26.187706Z

## Published at

2026-04-21T03:26:09.876606Z

## Doi



## First published url

https://doi.org/10.1088/1361-648X/ae5e14

## Date published

2026-04-24

## Recorded date published

2026-4-24

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Ferromagnetic Ferroelectricity due to Orbital Ordering
  title_type: original
  lang: en

## Description

- description: 'Realization of ferromagnetic ferroelectricity, combining two ferroic
    orders in a single phase, is the longstanding problem of great practical importance.
    One of the difficulties is that ferromagnetism alone cannot break inversion symmetry.
    Therefore, such a phase cannon be obtained by purely magnetic means. Here, we
    show how it can be designed by making orbital degrees of freedom active. The idea
    can be traced back to a basic principle of interatomic exchange, which states
    that an alternation of occupied orbitals along a bond (i.e., antiferro orbital
    order) favors ferromagnetic coupling. Moreover, the antiferro orbital order breaks
    the inversion symmetry, so that the bond becomes not simply ferromagnetic but
    also ferroelectric. Then, we formulate main principles governing the realization
    of such a state in solids, namely: (i) The magnetic atoms should not be located
    in inversion centers, as in the honeycomb lattice; (ii) The orbitals should be
    flexible enough to adjust they shape and minimize the energy of exchange interactions;
    (iii) This flexibility can be achieved by intraatomic interactions, which are
    responsible for Hund''s second rule and compete with the crystal field splitting;
    (iv) For octahedrally coordinated transition-metal compounds, the most promising
    candidates appear to be iodides with a d2 configuration and relatively weak d–p
    hybridization. Such a situation is realized in the van der Walls compound VI3,
    which we expect to be ferromagnetic ferroelectric. '
  description_type: abstract
  lang: eng

## Creator

- name: SOLOVYEV Igor
  role: author
  orcid: https://orcid.org/0000-0002-2010-9877
  organization: National Institute for Materials Science
  department: Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials
    Field/Quantum Materials Modeling Group

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: ferroelectricity
  schema: not_defined
- subject: ferromagnetism
  schema: not_defined
- subject: orbital ordering
  schema: not_defined
- subject: Hund’s rules
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: JOURNAL OF PHYSICS-CONDENSED MATTER
  issn: '09538984'
  volume: '38'
  issue: '16'

## Conference



## Related item



## Funding



## 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: 9c2270e3-9055-4921-9f94-9ed987dc7bb3
  filename: cm_38_16_161501.pdf
  content_type: application/pdf
  size: 2941941
  md5: 0f5c9d5ffcb16495f157a4ae225dfacc

## Thumbnail

fileset_id: 9c2270e3-9055-4921-9f94-9ed987dc7bb3
filename: cm_38_16_161501.pdf