Structural and electrical properties of InN hollow nanotubes under high pressure

Junkai Zhang; Yanzhang Ma; Meiling Sun; Guangchao Yin; Jinghai Yang

doi:10.1016/j.matlet.2017.11.101

Structural and electrical properties of InN hollow nanotubes under high pressure

Junkai Zhang, Yanzhang Ma, Meiling Sun, Guangchao Yin, Jinghai Yang

Mechanical Engineering

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

3 Scopus citations

Abstract

High-pressure in-situ synchrotron X-ray diffraction and electrical measurements were performed on InN hollow nanotubes to establish the correlation between structural changes and electrical transportation properties under compression. XRD spectra indicate a partially reversible wurtzite-rocksalt structural transition of InN induced by compression. Pressure-cycling resistivity and impedance spectra measurements reveal the corresponding electrical anomalies during the transition. Variable temperature resistivity indicates an unexpected metallic-like conduction of InN within 100–300 K in whole observed pressure range, which is attributed to the gradually enhanced phonon scattering at nano-grain boundaries and the almost unchanged electron concentration with temperature elevation. Pressure dependent temperature coefficient further evidences the wurtzite-rocksalt structural transition. Definite conductive phase diagram reported here will shed a new light on building InN-based application of the future.

Original language	English
Pages (from-to)	306-310
Number of pages	5
Journal	Materials Letters
Volume	213
DOIs	https://doi.org/10.1016/j.matlet.2017.11.101
State	Published - Feb 15 2018

Keywords

Electrical properties
Nanocrystalline materials
Phase transformation
Spectroscopy

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10.1016/j.matlet.2017.11.101

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title = "Structural and electrical properties of InN hollow nanotubes under high pressure",

abstract = "High-pressure in-situ synchrotron X-ray diffraction and electrical measurements were performed on InN hollow nanotubes to establish the correlation between structural changes and electrical transportation properties under compression. XRD spectra indicate a partially reversible wurtzite-rocksalt structural transition of InN induced by compression. Pressure-cycling resistivity and impedance spectra measurements reveal the corresponding electrical anomalies during the transition. Variable temperature resistivity indicates an unexpected metallic-like conduction of InN within 100–300 K in whole observed pressure range, which is attributed to the gradually enhanced phonon scattering at nano-grain boundaries and the almost unchanged electron concentration with temperature elevation. Pressure dependent temperature coefficient further evidences the wurtzite-rocksalt structural transition. Definite conductive phase diagram reported here will shed a new light on building InN-based application of the future.",

keywords = "Electrical properties, Nanocrystalline materials, Phase transformation, Spectroscopy",

author = "Junkai Zhang and Yanzhang Ma and Meiling Sun and Guangchao Yin and Jinghai Yang",

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TY - JOUR

T1 - Structural and electrical properties of InN hollow nanotubes under high pressure

AU - Zhang, Junkai

AU - Ma, Yanzhang

AU - Sun, Meiling

AU - Yin, Guangchao

AU - Yang, Jinghai

PY - 2018/2/15

Y1 - 2018/2/15

N2 - High-pressure in-situ synchrotron X-ray diffraction and electrical measurements were performed on InN hollow nanotubes to establish the correlation between structural changes and electrical transportation properties under compression. XRD spectra indicate a partially reversible wurtzite-rocksalt structural transition of InN induced by compression. Pressure-cycling resistivity and impedance spectra measurements reveal the corresponding electrical anomalies during the transition. Variable temperature resistivity indicates an unexpected metallic-like conduction of InN within 100–300 K in whole observed pressure range, which is attributed to the gradually enhanced phonon scattering at nano-grain boundaries and the almost unchanged electron concentration with temperature elevation. Pressure dependent temperature coefficient further evidences the wurtzite-rocksalt structural transition. Definite conductive phase diagram reported here will shed a new light on building InN-based application of the future.

AB - High-pressure in-situ synchrotron X-ray diffraction and electrical measurements were performed on InN hollow nanotubes to establish the correlation between structural changes and electrical transportation properties under compression. XRD spectra indicate a partially reversible wurtzite-rocksalt structural transition of InN induced by compression. Pressure-cycling resistivity and impedance spectra measurements reveal the corresponding electrical anomalies during the transition. Variable temperature resistivity indicates an unexpected metallic-like conduction of InN within 100–300 K in whole observed pressure range, which is attributed to the gradually enhanced phonon scattering at nano-grain boundaries and the almost unchanged electron concentration with temperature elevation. Pressure dependent temperature coefficient further evidences the wurtzite-rocksalt structural transition. Definite conductive phase diagram reported here will shed a new light on building InN-based application of the future.

KW - Electrical properties

KW - Nanocrystalline materials

KW - Phase transformation

KW - Spectroscopy

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DO - 10.1016/j.matlet.2017.11.101

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VL - 213

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EP - 310

JO - Materials Letters

JF - Materials Letters

ER -

Structural and electrical properties of InN hollow nanotubes under high pressure

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Keywords

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