Effect of crystal structure on the Young's modulus of GaP nanowires

Prokhor A. Alekseev; Bogdan R. Borodin; Pavel Geydt; Vladislav Khayrudinov; Kristina Bespalova; Demid A. Kirilenko; Rodion R. Reznik; Alexey V. Nashchekin; Tuomas Haggrén; Erkki Lähderanta; George E. Cirlin; Harri Lipsanen; Mikhail S. Dunaevskiy

doi:10.1088/1361-6528/ac0ac7

Effect of crystal structure on the Young's modulus of GaP nanowires

Prokhor A. Alekseev^*, Bogdan R. Borodin, Pavel Geydt, Vladislav Khayrudinov, Kristina Bespalova, Demid A. Kirilenko, Rodion R. Reznik, Alexey V. Nashchekin, Tuomas Haggrén, Erkki Lähderanta, George E. Cirlin, Harri Lipsanen, Mikhail S. Dunaevskiy

^*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

Young's modulus of tapered mixed composition (zinc-blende with a high density of twins and wurtzite with a high density of stacking faults) gallium phosphide (GaP) nanowires (NWs) was investigated by atomic force microscopy. Experimental measurements were performed by obtaining bending profiles of as-grown inclined GaP NWs deformed by applying a constant force to a series of NW surface locations at various distances from the NW/substrate interface. Numerical modeling of experimental data on bending profiles was done by applying Euler-Bernoulli beam theory. Measurements of the nano-local stiffness at different distances from the NW/substrate interface revealed NWs with a non-ideal mechanical fixation at the NW/substrate interface. Analysis of the NWs with ideally fixed base resulted in experimentally measured Young's modulus of 155 20 GPa for ZB NWs, and 157 20 GPa for WZ NWs, respectively, which are in consistence with a theoretically predicted bulk value of 167 GPa. Thus, impacts of the crystal structure (WZ/ZB) and crystal defects on Young's modulus of GaP NWs were found to be negligible.

Original language	English
Article number	385706
Journal	Nanotechnology
Volume	32
Issue number	38
DOIs	https://doi.org/10.1088/1361-6528/ac0ac7
Publication status	Published - 17 Sept 2021
Externally published	Yes

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title = "Effect of crystal structure on the Young's modulus of GaP nanowires",

abstract = "Young's modulus of tapered mixed composition (zinc-blende with a high density of twins and wurtzite with a high density of stacking faults) gallium phosphide (GaP) nanowires (NWs) was investigated by atomic force microscopy. Experimental measurements were performed by obtaining bending profiles of as-grown inclined GaP NWs deformed by applying a constant force to a series of NW surface locations at various distances from the NW/substrate interface. Numerical modeling of experimental data on bending profiles was done by applying Euler-Bernoulli beam theory. Measurements of the nano-local stiffness at different distances from the NW/substrate interface revealed NWs with a non-ideal mechanical fixation at the NW/substrate interface. Analysis of the NWs with ideally fixed base resulted in experimentally measured Young's modulus of 155 20 GPa for ZB NWs, and 157 20 GPa for WZ NWs, respectively, which are in consistence with a theoretically predicted bulk value of 167 GPa. Thus, impacts of the crystal structure (WZ/ZB) and crystal defects on Young's modulus of GaP NWs were found to be negligible.",

keywords = "GaP, WZ/ZB, Young s modulus, atomic force microscopy, bending, nanowire",

author = "Alekseev, {Prokhor A.} and Borodin, {Bogdan R.} and Pavel Geydt and Vladislav Khayrudinov and Kristina Bespalova and Kirilenko, {Demid A.} and Reznik, {Rodion R.} and Nashchekin, {Alexey V.} and Tuomas Haggr{\'e}n and Erkki L{\"a}hderanta and Cirlin, {George E.} and Harri Lipsanen and Dunaevskiy, {Mikhail S.}",

note = "Publisher Copyright: {\textcopyright} 2021 IOP Publishing Ltd.",

year = "2021",

month = sep,

day = "17",

doi = "10.1088/1361-6528/ac0ac7",

language = "English",

volume = "32",

journal = "Nanotechnology",

issn = "0957-4484",

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TY - JOUR

T1 - Effect of crystal structure on the Young's modulus of GaP nanowires

AU - Alekseev, Prokhor A.

AU - Borodin, Bogdan R.

AU - Geydt, Pavel

AU - Khayrudinov, Vladislav

AU - Bespalova, Kristina

AU - Kirilenko, Demid A.

AU - Reznik, Rodion R.

AU - Nashchekin, Alexey V.

AU - Haggrén, Tuomas

AU - Lähderanta, Erkki

AU - Cirlin, George E.

AU - Lipsanen, Harri

AU - Dunaevskiy, Mikhail S.

PY - 2021/9/17

Y1 - 2021/9/17

N2 - Young's modulus of tapered mixed composition (zinc-blende with a high density of twins and wurtzite with a high density of stacking faults) gallium phosphide (GaP) nanowires (NWs) was investigated by atomic force microscopy. Experimental measurements were performed by obtaining bending profiles of as-grown inclined GaP NWs deformed by applying a constant force to a series of NW surface locations at various distances from the NW/substrate interface. Numerical modeling of experimental data on bending profiles was done by applying Euler-Bernoulli beam theory. Measurements of the nano-local stiffness at different distances from the NW/substrate interface revealed NWs with a non-ideal mechanical fixation at the NW/substrate interface. Analysis of the NWs with ideally fixed base resulted in experimentally measured Young's modulus of 155 20 GPa for ZB NWs, and 157 20 GPa for WZ NWs, respectively, which are in consistence with a theoretically predicted bulk value of 167 GPa. Thus, impacts of the crystal structure (WZ/ZB) and crystal defects on Young's modulus of GaP NWs were found to be negligible.

AB - Young's modulus of tapered mixed composition (zinc-blende with a high density of twins and wurtzite with a high density of stacking faults) gallium phosphide (GaP) nanowires (NWs) was investigated by atomic force microscopy. Experimental measurements were performed by obtaining bending profiles of as-grown inclined GaP NWs deformed by applying a constant force to a series of NW surface locations at various distances from the NW/substrate interface. Numerical modeling of experimental data on bending profiles was done by applying Euler-Bernoulli beam theory. Measurements of the nano-local stiffness at different distances from the NW/substrate interface revealed NWs with a non-ideal mechanical fixation at the NW/substrate interface. Analysis of the NWs with ideally fixed base resulted in experimentally measured Young's modulus of 155 20 GPa for ZB NWs, and 157 20 GPa for WZ NWs, respectively, which are in consistence with a theoretically predicted bulk value of 167 GPa. Thus, impacts of the crystal structure (WZ/ZB) and crystal defects on Young's modulus of GaP NWs were found to be negligible.

KW - GaP

KW - WZ/ZB

KW - Young s modulus

KW - atomic force microscopy

KW - bending

KW - nanowire

UR - http://www.scopus.com/inward/record.url?scp=85109974421&partnerID=8YFLogxK

U2 - 10.1088/1361-6528/ac0ac7

DO - 10.1088/1361-6528/ac0ac7

M3 - Article

SN - 0957-4484

VL - 32

JO - Nanotechnology

JF - Nanotechnology

IS - 38

M1 - 385706

ER -

Effect of crystal structure on the Young's modulus of GaP nanowires

Abstract

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