Analysis of structural phase transition behavior of Ln2NiO 4 + δ (Ln: Nd, Pr) with variation of oxygen content

Eiki Niwa; Kazuya Wakai; Tetsuya Hori; Takashi Nakamura; Keiji Yashiro; Junichiro Mizusaki; Takuya Hashimoto

doi:10.1016/j.ssi.2014.03.031

Analysis of structural phase transition behavior of Ln₂NiO _{4 + δ} (Ln: Nd, Pr) with variation of oxygen content

Eiki Niwa, Kazuya Wakai, Tetsuya Hori, Takashi Nakamura, Keiji Yashiro, Junichiro Mizusaki, Takuya Hashimoto

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

6 Citations (Scopus)

Abstract

The orthorhombic-tetragonal structural phase transition behaviors of Pr₂NiO_{4 + δ} and Nd₂NiO _{4 + δ} were investigated by DSC and TG-DTA under controlled oxygen partial pressure, P(O₂), and their difference was discussed. A discrete weight variation originating from the variation of oxide ion content, Δδ, was observed during the phase transition in both Pr ₂NiO_{4 + δ} and Nd₂NiO _{4 + δ}. The Δδ of Pr₂NiO _{4 + δ} was larger than that of Nd₂NiO _{4 + δ}, and the Δδ of Pr₂NiO _{4 + δ} increased with decreasing P(O₂), while that of Nd₂NiO_{4 + δ} was independent on P(O₂), suggesting that not only the valence of Ni but also that of Pr changed during the phase transition in Pr₂NiO_{4 + δ}.

Original language	English
Pages (from-to)	724-727
Number of pages	4
Journal	Solid State Ionics
Volume	262
DOIs	https://doi.org/10.1016/j.ssi.2014.03.031
Publication status	Published - Sept 1 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{47bafd9c33aa4887a31b013e550b5f6e,

title = "Analysis of structural phase transition behavior of Ln2NiO 4 + δ (Ln: Nd, Pr) with variation of oxygen content",

abstract = "The orthorhombic-tetragonal structural phase transition behaviors of Pr2NiO4 + δ and Nd2NiO 4 + δ were investigated by DSC and TG-DTA under controlled oxygen partial pressure, P(O2), and their difference was discussed. A discrete weight variation originating from the variation of oxide ion content, Δδ, was observed during the phase transition in both Pr 2NiO4 + δ and Nd2NiO 4 + δ. The Δδ of Pr2NiO 4 + δ was larger than that of Nd2NiO 4 + δ, and the Δδ of Pr2NiO 4 + δ increased with decreasing P(O2), while that of Nd2NiO4 + δ was independent on P(O2), suggesting that not only the valence of Ni but also that of Pr changed during the phase transition in Pr2NiO4 + δ.",

author = "Eiki Niwa and Kazuya Wakai and Tetsuya Hori and Takashi Nakamura and Keiji Yashiro and Junichiro Mizusaki and Takuya Hashimoto",

note = "Funding Information: This study was financially supported by grants from the “Strategic Research Base Development” Program for Private Universities (S0901022) subsidized by MEXT (2009) and from Nihon University Strategic Projects for Academic Research “Nanotechnology Excellence-Nanomaterial based Photonic and Quantum Technologies”. This work was performed under the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”",

year = "2014",

month = sep,

day = "1",

doi = "10.1016/j.ssi.2014.03.031",

language = "English",

volume = "262",

pages = "724--727",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

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TY - JOUR

T1 - Analysis of structural phase transition behavior of Ln2NiO 4 + δ (Ln

T2 - Nd, Pr) with variation of oxygen content

AU - Niwa, Eiki

AU - Wakai, Kazuya

AU - Hori, Tetsuya

AU - Nakamura, Takashi

AU - Yashiro, Keiji

AU - Mizusaki, Junichiro

AU - Hashimoto, Takuya

N1 - Funding Information: This study was financially supported by grants from the “Strategic Research Base Development” Program for Private Universities (S0901022) subsidized by MEXT (2009) and from Nihon University Strategic Projects for Academic Research “Nanotechnology Excellence-Nanomaterial based Photonic and Quantum Technologies”. This work was performed under the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”

PY - 2014/9/1

Y1 - 2014/9/1

N2 - The orthorhombic-tetragonal structural phase transition behaviors of Pr2NiO4 + δ and Nd2NiO 4 + δ were investigated by DSC and TG-DTA under controlled oxygen partial pressure, P(O2), and their difference was discussed. A discrete weight variation originating from the variation of oxide ion content, Δδ, was observed during the phase transition in both Pr 2NiO4 + δ and Nd2NiO 4 + δ. The Δδ of Pr2NiO 4 + δ was larger than that of Nd2NiO 4 + δ, and the Δδ of Pr2NiO 4 + δ increased with decreasing P(O2), while that of Nd2NiO4 + δ was independent on P(O2), suggesting that not only the valence of Ni but also that of Pr changed during the phase transition in Pr2NiO4 + δ.

AB - The orthorhombic-tetragonal structural phase transition behaviors of Pr2NiO4 + δ and Nd2NiO 4 + δ were investigated by DSC and TG-DTA under controlled oxygen partial pressure, P(O2), and their difference was discussed. A discrete weight variation originating from the variation of oxide ion content, Δδ, was observed during the phase transition in both Pr 2NiO4 + δ and Nd2NiO 4 + δ. The Δδ of Pr2NiO 4 + δ was larger than that of Nd2NiO 4 + δ, and the Δδ of Pr2NiO 4 + δ increased with decreasing P(O2), while that of Nd2NiO4 + δ was independent on P(O2), suggesting that not only the valence of Ni but also that of Pr changed during the phase transition in Pr2NiO4 + δ.

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DO - 10.1016/j.ssi.2014.03.031

M3 - Article

AN - SCOPUS:84903274395

SN - 0167-2738

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SP - 724

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JO - Solid State Ionics

JF - Solid State Ionics

ER -

Analysis of structural phase transition behavior of Ln₂NiO _{4 + δ} (Ln: Nd, Pr) with variation of oxygen content

Abstract

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