Structure and non-equilibrium phase diagram of the co-sputtered and post-annealed Fe-ZnO system

Jun Ichi Echigoya; Akira Takano; Masayoshi Yamaguchi; Katsuhiko Nonaka; Masahiko Nishijima

doi:10.2320/matertrans.MER2008428

Structure and non-equilibrium phase diagram of the co-sputtered and post-annealed Fe-ZnO system

Jun Ichi Echigoya, Akira Takano, Masayoshi Yamaguchi, Katsuhiko Nonaka, Masahiko Nishijima

Electron Microscopy Center

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

1 Citation (Scopus)

Abstract

X-ray diffraction and electron microscopic studies on co-sputtered Zn _1-xFe ₂O single crystalline films showed the solubility limit to be about X = 0.50 at 673 K. An increase of Fe greater than 0.50 resulted in the existence of Fe metal and (ZnFe)Fe ₂O ₄ spinel solid solution in a matrix of (ZnFe)O wurtzite solid solution below a substrate temperature of 573 K. Above a substrate temperature of 673 K., a ZnFe ₂O ₄ spinel phase rather than a Fe metal phase was seen. Annealing of as-sputtered films with a single phase of Zn _1-xFe _xO in air led to decomposition to the two-phase structure of Zn _1-xFe _xO wurtzite and ZnFe ₂O ₄ spinel and the decrease of the solubility limit of Fe in ZnO to about x = 0.11 at 873 K.

Original language	English
Pages (from-to)	1208-1213
Number of pages	6
Journal	Materials Transactions
Volume	50
Issue number	5
DOIs	https://doi.org/10.2320/matertrans.MER2008428
Publication status	Published - 2009 May

Keywords

Microstructure
Oxide materials
Transmission electron microscopy
Vapor deposition

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Structure and non-equilibrium phase diagram of the co-sputtered and post-annealed Fe-ZnO system",

abstract = "X-ray diffraction and electron microscopic studies on co-sputtered Zn 1-xFe 2O single crystalline films showed the solubility limit to be about X = 0.50 at 673 K. An increase of Fe greater than 0.50 resulted in the existence of Fe metal and (ZnFe)Fe 2O 4 spinel solid solution in a matrix of (ZnFe)O wurtzite solid solution below a substrate temperature of 573 K. Above a substrate temperature of 673 K., a ZnFe 2O 4 spinel phase rather than a Fe metal phase was seen. Annealing of as-sputtered films with a single phase of Zn 1-xFe xO in air led to decomposition to the two-phase structure of Zn 1-xFe xO wurtzite and ZnFe 2O 4 spinel and the decrease of the solubility limit of Fe in ZnO to about x = 0.11 at 873 K.",

keywords = "Microstructure, Oxide materials, Transmission electron microscopy, Vapor deposition",

author = "Echigoya, {Jun Ichi} and Akira Takano and Masayoshi Yamaguchi and Katsuhiko Nonaka and Masahiko Nishijima",

year = "2009",

month = may,

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pages = "1208--1213",

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T1 - Structure and non-equilibrium phase diagram of the co-sputtered and post-annealed Fe-ZnO system

AU - Echigoya, Jun Ichi

AU - Takano, Akira

AU - Yamaguchi, Masayoshi

AU - Nonaka, Katsuhiko

AU - Nishijima, Masahiko

PY - 2009/5

Y1 - 2009/5

N2 - X-ray diffraction and electron microscopic studies on co-sputtered Zn 1-xFe 2O single crystalline films showed the solubility limit to be about X = 0.50 at 673 K. An increase of Fe greater than 0.50 resulted in the existence of Fe metal and (ZnFe)Fe 2O 4 spinel solid solution in a matrix of (ZnFe)O wurtzite solid solution below a substrate temperature of 573 K. Above a substrate temperature of 673 K., a ZnFe 2O 4 spinel phase rather than a Fe metal phase was seen. Annealing of as-sputtered films with a single phase of Zn 1-xFe xO in air led to decomposition to the two-phase structure of Zn 1-xFe xO wurtzite and ZnFe 2O 4 spinel and the decrease of the solubility limit of Fe in ZnO to about x = 0.11 at 873 K.

AB - X-ray diffraction and electron microscopic studies on co-sputtered Zn 1-xFe 2O single crystalline films showed the solubility limit to be about X = 0.50 at 673 K. An increase of Fe greater than 0.50 resulted in the existence of Fe metal and (ZnFe)Fe 2O 4 spinel solid solution in a matrix of (ZnFe)O wurtzite solid solution below a substrate temperature of 573 K. Above a substrate temperature of 673 K., a ZnFe 2O 4 spinel phase rather than a Fe metal phase was seen. Annealing of as-sputtered films with a single phase of Zn 1-xFe xO in air led to decomposition to the two-phase structure of Zn 1-xFe xO wurtzite and ZnFe 2O 4 spinel and the decrease of the solubility limit of Fe in ZnO to about x = 0.11 at 873 K.

KW - Microstructure

KW - Oxide materials

KW - Transmission electron microscopy

KW - Vapor deposition

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