# Formation process and composition-dependent properties in non-centrosymmetric Ta2O5 phase with Zr substitution

https://mdr.nims.go.jp/datasets/c06e79c3-70e2-4a17-a58f-7a0085afbb9b

## File

- [JApplPhys139_1014102.pdf](https://mdr.nims.go.jp/filesets/3524c2e6-99ab-407d-9ff8-f63b44f627a4/download) ([Detail](https://mdr.nims.go.jp/filesets/3524c2e6-99ab-407d-9ff8-f63b44f627a4.md))

## Id

c06e79c3-70e2-4a17-a58f-7a0085afbb9b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-03-25T05:00:49.267582Z

## Updated at

2026-04-10T01:38:55.667368Z

## Published at

2026-04-10T03:21:25.518932Z

## Doi



## First published url

https://doi.org/10.1063/5.0312634

## Date published

2026-03-14

## Recorded date published

2026-3-14

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Formation process and composition-dependent properties in non-centrosymmetric
    Ta2O5 phase with Zr substitution
  title_type: original
  lang: en

## Description

- description: "(ZrxTa1−x)2O5−x was prepared by a solid-state reaction of ZrO2 and
    Ta2O5, and the L0-Ta2O5 phase was obtained by cooling the H-Ta2O5 phase. High-temperature
    x-ray diffraction measurements showed that the starting materials, ZrO2 and low-temperature
    L-Ta2O5, formed the high-temperature H-Ta2O5 phase when heated above 1360 °C.
    Upon cooling, this phase sequentially transformed into L00-Ta2O5, the high-temperature
    L0-Ta2O5 phase, and L0-Ta2O5 phases. As the Zr content, x, decreased, the transition
    from the H-Ta2O5 phase to the L00-Ta2O5 phase slowed. The temperature dependence
    of the dielectric constant revealed a maximum value, which is attributed to the
    phase transition from L0-Ta2O5 to L00-Ta2O5. This transition temperature decreases
    by approximately 50 °C for every 0.01 increase in the x value. The L0-Ta2O5 phase
    exhibited negative volumetric thermal expansion (NTE) behavior near the phase
    transition temperature. As x decreased, the NTE coefficient increased from−1.09
    × 10−6/K (77–127 °C) for x = 0.10 to−2.06 × 10−5/K (327–427 °C) for x = 0.05.
    The substitution of Zr into Ta2O5 stabilized the non-centrosymmetric L0-Ta2O5
    phase and controlled the phase transition temperature and thermal expansion behavior."
  description_type: abstract
  lang: und

## Creator

- name: Suzuka Udagawa
  role: author
  orcid: https://orcid.org/0009-0004-4163-9406
- name: Takanori Mimura
  role: author
  orcid: https://orcid.org/0009-0009-3818-5905
- name: Tetsuhiro Katsumata
  role: author
  orcid: https://orcid.org/0000-0002-8430-935X
- name: Yoshitaka Matsushita
  role: author
  orcid: https://orcid.org/0000-0002-4968-8905
- name: Takashi Mochiku
  role: author
  orcid: https://orcid.org/0000-0003-2208-4279
- name: Yoshiyuki Inaguma
  role: author
  orcid: https://orcid.org/0000-0002-1174-8407

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: Ta2O5
  schema: not_defined
- subject: Zr substitution
  schema: not_defined
- subject: non-centrosymmetric
  schema: not_defined
- subject: high-temperature X-ray diffraction
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Journal of Applied Physics
  issn: '00218979'
  volume: '139'
  issue: '10'
  article_number: '104102'

## Conference



## Related item



## Funding

- identifier: JP23H02050
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23K26743
  funder_name: Japan Society for the Promotion of Science
- identifier: JP25K17643
  funder_name: Japan Society for the Promotion of Science

## 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



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## Custom property



## Fileset

- id: 3524c2e6-99ab-407d-9ff8-f63b44f627a4
  filename: JApplPhys139_1014102.pdf
  content_type: application/pdf
  size: 2457518
  md5: 974e40af7b3a0ac7d6abb599fe59a588

## Thumbnail

fileset_id: 3524c2e6-99ab-407d-9ff8-f63b44f627a4
filename: JApplPhys139_1014102.pdf