The role of Fe dopants in phase stability and electric switching properties of Fe-doped VO2

Ruibo Zhang; Hai Bo Jin; Deyu Guo; Jiasong Zhang; Zhengjing Zhao; Yongjie Zhao; Jing Bo Li

doi:10.1016/j.ceramint.2016.09.017

The role of Fe dopants in phase stability and electric switching properties of Fe-doped VO₂

Ruibo Zhang, Hai Bo Jin, Deyu Guo, Jiasong Zhang, Zhengjing Zhao, Yongjie Zhao, Jing Bo Li^*

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

39 Citations (Scopus)

Abstract

The effect of Fe dopants on the metal-insulator transition of VO₂ is investigated by X-ray diffraction, Raman spectroscopy and thermal resistance measurements. The transition temperature is observed to decrease first, reach its minima (~60 °C) at ~1.5 at% Fe and then rise with increasing the doping concentration. The M₂ and T phases are determined to be stabilized by the Fe dopants. The stability regions of polymorphic phases of Fe-doped VO₂ are examined by Raman spectroscopy and X-ray diffraction. The solubility of Fe in VO₂ is determined to be ~4 at%. A phase diagram of Fe-doped VO₂ is constructed based on the experimental results. The resistance change of samples with the Fe content less than 1.5 at% remains to be ~4 orders of magnitude, demonstrating Fe-doped VO₂ a promising electric switching material.

Original language	English
Pages (from-to)	18764-18770
Number of pages	7
Journal	Ceramics International
Volume	42
Issue number	16
DOIs	https://doi.org/10.1016/j.ceramint.2016.09.017
Publication status	Published - 1 Dec 2016

Keywords

Electric switching properties
Iron doping
Metal-insulator transition
VO

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10.1016/j.ceramint.2016.09.017

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title = "The role of Fe dopants in phase stability and electric switching properties of Fe-doped VO2",

abstract = "The effect of Fe dopants on the metal-insulator transition of VO2 is investigated by X-ray diffraction, Raman spectroscopy and thermal resistance measurements. The transition temperature is observed to decrease first, reach its minima (~60 °C) at ~1.5 at% Fe and then rise with increasing the doping concentration. The M2 and T phases are determined to be stabilized by the Fe dopants. The stability regions of polymorphic phases of Fe-doped VO2 are examined by Raman spectroscopy and X-ray diffraction. The solubility of Fe in VO2 is determined to be ~4 at%. A phase diagram of Fe-doped VO2 is constructed based on the experimental results. The resistance change of samples with the Fe content less than 1.5 at% remains to be ~4 orders of magnitude, demonstrating Fe-doped VO2 a promising electric switching material.",

keywords = "Electric switching properties, Iron doping, Metal-insulator transition, VO",

author = "Ruibo Zhang and Jin, {Hai Bo} and Deyu Guo and Jiasong Zhang and Zhengjing Zhao and Yongjie Zhao and Li, {Jing Bo}",

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T1 - The role of Fe dopants in phase stability and electric switching properties of Fe-doped VO2

AU - Zhang, Ruibo

AU - Jin, Hai Bo

AU - Guo, Deyu

AU - Zhang, Jiasong

AU - Zhao, Zhengjing

AU - Zhao, Yongjie

AU - Li, Jing Bo

PY - 2016/12/1

Y1 - 2016/12/1

N2 - The effect of Fe dopants on the metal-insulator transition of VO2 is investigated by X-ray diffraction, Raman spectroscopy and thermal resistance measurements. The transition temperature is observed to decrease first, reach its minima (~60 °C) at ~1.5 at% Fe and then rise with increasing the doping concentration. The M2 and T phases are determined to be stabilized by the Fe dopants. The stability regions of polymorphic phases of Fe-doped VO2 are examined by Raman spectroscopy and X-ray diffraction. The solubility of Fe in VO2 is determined to be ~4 at%. A phase diagram of Fe-doped VO2 is constructed based on the experimental results. The resistance change of samples with the Fe content less than 1.5 at% remains to be ~4 orders of magnitude, demonstrating Fe-doped VO2 a promising electric switching material.

AB - The effect of Fe dopants on the metal-insulator transition of VO2 is investigated by X-ray diffraction, Raman spectroscopy and thermal resistance measurements. The transition temperature is observed to decrease first, reach its minima (~60 °C) at ~1.5 at% Fe and then rise with increasing the doping concentration. The M2 and T phases are determined to be stabilized by the Fe dopants. The stability regions of polymorphic phases of Fe-doped VO2 are examined by Raman spectroscopy and X-ray diffraction. The solubility of Fe in VO2 is determined to be ~4 at%. A phase diagram of Fe-doped VO2 is constructed based on the experimental results. The resistance change of samples with the Fe content less than 1.5 at% remains to be ~4 orders of magnitude, demonstrating Fe-doped VO2 a promising electric switching material.

KW - Electric switching properties

KW - Iron doping

KW - Metal-insulator transition

KW - VO

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VL - 42

SP - 18764

EP - 18770

JO - Ceramics International

JF - Ceramics International

IS - 16

ER -

The role of Fe dopants in phase stability and electric switching properties of Fe-doped VO₂

Abstract

Keywords

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