Structural properties of Fe-doped lanthanum gallate

Kazuhiro Mori; Toshiharu Fukunaga; Koji Shibata; Kenji Iwase; Stefanus Harjo; Akinori Hoshikawa; Keiji Itoh; Takashi Kamiyama; Toru Ishigaki

doi:10.1016/j.physb.2004.07.004

Structural properties of Fe-doped lanthanum gallate

Kazuhiro Mori, Toshiharu Fukunaga, Koji Shibata, Kenji Iwase, Stefanus Harjo, Akinori Hoshikawa, Keiji Itoh, Takashi Kamiyama, Toru Ishigaki

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

8 Citations (Scopus)

Abstract

Structural characteristics of Fe-doped LaGaO_3-δ were studied by differential scanning calorimeter, neutron and high-temperature X-ray powder diffraction measurements. It was found that a phase transition temperature increases in proportion to an amount of Fe. The crystal structure could be described as a low-temperature orthorhombic phase (Pnma) and a high-temperature rhombohedral one (R3c), respectively. Lattice parameters and bond lengths between M (=Ga/Fe) and O are monotonically expand with increasing Fe-content on both orthorhombic and rhombohedral phases. This means that a substitution of Ga³⁺ with Fe³⁺ leads to an electronic configuration of t_2g³e_g² (high-spin state, HS).

Original language	English
Pages (from-to)	147-155
Number of pages	9
Journal	Physica B: Condensed Matter
Volume	352
Issue number	1-4
DOIs	https://doi.org/10.1016/j.physb.2004.07.004
Publication status	Published - Oct 30 2004
Externally published	Yes

Keywords

DSC
High-spin state
LaGaO
Neutron diffraction
Phase transition
X-ray diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2004.07.004

Cite this

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title = "Structural properties of Fe-doped lanthanum gallate",

abstract = "Structural characteristics of Fe-doped LaGaO3-δ were studied by differential scanning calorimeter, neutron and high-temperature X-ray powder diffraction measurements. It was found that a phase transition temperature increases in proportion to an amount of Fe. The crystal structure could be described as a low-temperature orthorhombic phase (Pnma) and a high-temperature rhombohedral one (R3c), respectively. Lattice parameters and bond lengths between M (=Ga/Fe) and O are monotonically expand with increasing Fe-content on both orthorhombic and rhombohedral phases. This means that a substitution of Ga3+ with Fe3+ leads to an electronic configuration of t2g3eg2 (high-spin state, HS).",

keywords = "DSC, High-spin state, LaGaO, Neutron diffraction, Phase transition, X-ray diffraction",

author = "Kazuhiro Mori and Toshiharu Fukunaga and Koji Shibata and Kenji Iwase and Stefanus Harjo and Akinori Hoshikawa and Keiji Itoh and Takashi Kamiyama and Toru Ishigaki",

year = "2004",

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doi = "10.1016/j.physb.2004.07.004",

language = "English",

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journal = "Physica B: Condensed Matter",

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TY - JOUR

T1 - Structural properties of Fe-doped lanthanum gallate

AU - Mori, Kazuhiro

AU - Fukunaga, Toshiharu

AU - Shibata, Koji

AU - Iwase, Kenji

AU - Harjo, Stefanus

AU - Hoshikawa, Akinori

AU - Itoh, Keiji

AU - Kamiyama, Takashi

AU - Ishigaki, Toru

PY - 2004/10/30

Y1 - 2004/10/30

N2 - Structural characteristics of Fe-doped LaGaO3-δ were studied by differential scanning calorimeter, neutron and high-temperature X-ray powder diffraction measurements. It was found that a phase transition temperature increases in proportion to an amount of Fe. The crystal structure could be described as a low-temperature orthorhombic phase (Pnma) and a high-temperature rhombohedral one (R3c), respectively. Lattice parameters and bond lengths between M (=Ga/Fe) and O are monotonically expand with increasing Fe-content on both orthorhombic and rhombohedral phases. This means that a substitution of Ga3+ with Fe3+ leads to an electronic configuration of t2g3eg2 (high-spin state, HS).

AB - Structural characteristics of Fe-doped LaGaO3-δ were studied by differential scanning calorimeter, neutron and high-temperature X-ray powder diffraction measurements. It was found that a phase transition temperature increases in proportion to an amount of Fe. The crystal structure could be described as a low-temperature orthorhombic phase (Pnma) and a high-temperature rhombohedral one (R3c), respectively. Lattice parameters and bond lengths between M (=Ga/Fe) and O are monotonically expand with increasing Fe-content on both orthorhombic and rhombohedral phases. This means that a substitution of Ga3+ with Fe3+ leads to an electronic configuration of t2g3eg2 (high-spin state, HS).

KW - DSC

KW - High-spin state

KW - LaGaO

KW - Neutron diffraction

KW - Phase transition

KW - X-ray diffraction

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U2 - 10.1016/j.physb.2004.07.004

DO - 10.1016/j.physb.2004.07.004

M3 - Article

AN - SCOPUS:5544275370

SN - 0921-4526

VL - 352

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EP - 155

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4

ER -

Structural properties of Fe-doped lanthanum gallate

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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