Elastic strain engineering of ferroic oxides

MRS Bulletin ◽  
2014 ◽  
Vol 39 (2) ◽  
pp. 118-130 ◽  
Author(s):  
Darrell G. Schlom ◽  
Long-Qing Chen ◽  
Craig J. Fennie ◽  
Venkatraman Gopalan ◽  
David A. Muller ◽  
...  
Keyword(s):  
Elastic Strain ◽  
Strain Engineering ◽  
Image Position

Abstract

scholarly journals Elastic strain engineering for unprecedented materials properties

MRS Bulletin ◽  
2014 ◽  
Vol 39 (2) ◽  
pp. 108-114 ◽  
Author(s):  
Ju Li ◽  
Zhiwei Shan ◽  
Evan Ma
Keyword(s):  
Elastic Strain ◽  
Strain Engineering ◽  
Materials Properties ◽  
Image Position

Abstract

scholarly journals Nonvolatile modulation of electronic structure and correlative magnetism of L10-FePt films using significant strain induced by shape memory substrates

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Chun Feng ◽  
Jiancheng Zhao ◽  
Feng Yang ◽  
Kui Gong ◽  
Shijie Hao ◽  
...  
Keyword(s):  
Shape Memory ◽  
Elastic Strain ◽  
Lattice Strain ◽  
Physical Nature ◽  
Strain Engineering ◽  
Strain Effect ◽  
Pure Strain ◽  
Electronic Density ◽  
Fept Film ◽  
Novel Approach

Abstract Tuning the lattice strain (εL) is a novel approach to manipulate the magnetic, electronic and transport properties of spintronic materials. Achievable εL in thin film samples induced by traditional ferroelectric or flexible substrates is usually volatile and well below 1%. Such limits in the tuning capability cannot meet the requirements for nonvolatile applications of spintronic materials. This study answers to the challenge of introducing significant amount of elastic strain in deposited thin films so that noticeable tuning of the spintronic characteristics can be realized. Based on subtle elastic strain engineering of depositing L10-FePt films on pre-stretched NiTi(Nb) shape memory alloy substrates, steerable and nonvolatile lattice strain up to 2.18% has been achieved in the L10-FePt films by thermally controlling the shape memory effect of the substrates. Introduced strains at this level significantly modify the electronic density of state, orbital overlap and spin-orbit coupling (SOC) strength in the FePt film, leading to nonvolatile modulation of magnetic anisotropy and magnetization reversal characteristics. This finding not only opens an efficient avenue for the nonvolatile tuning of SOC based magnetism and spintronic effects, but also helps to clarify the physical nature of pure strain effect.

Electronic and Mechanical Coupling in Elastically Bent ZnO Micro/Nanowires

2014 ◽  
Vol 1664 ◽  
Author(s):  
Xuewen Fu ◽  
Zhimin Liao ◽  
Dapeng Yu
Keyword(s):  
Elastic Strain ◽  
Electronic Band Structure ◽  
Coupling Effect ◽  
Low Cost ◽  
Chemical Properties ◽  
Strain Engineering ◽  
Near Band Edge ◽  
Engineering Strain ◽  
Electronic Band ◽  
Mechanical Coupling

ABSTRACTElastic engineering strain has been regarded as a low-cost and continuously variable manner for altering the physical and chemical properties of materials, and it becomes even more important at low-dimensionality because at micro/nanoscale, materials/structures can usually bear exceptionally high elastic strains before failure. The elastic strain effects are therefore greatly magnified in micro/nanoscale structures and should be of great potential in the design of novel functional devices. The purpose of this overview is to present a summary of our recently progress in the energy band engineering of elastically bent ZnO micro/nanowires. First, we present the electronic and mechanical coupling effect in bent ZnO nanowires. Second, we summary the bending strain gradient effect on the near-band-edge (NBE) emission photon energy of bent ZnO micro/nanowires. Third, we show that the strain can induce exciton fine-structure splitting and shift in ZnO microwires. Our recent progresses illustrate that the electronic band structure of ZnO micro/nanowires can be dramatically tuned by elastic strain engineering, and point to potential future applications based on the elastic strain engineering of ZnO micro/nanowires.

Simultaneous large continuous band gap tunability and photoluminescence enhancement in GaSe nanosheets via elastic strain engineering

Nano Energy ◽  
2017 ◽  
Vol 32 ◽  
pp. 157-164 ◽  
Author(s):  
Yecun Wu ◽  
Huei-Ru Fuh ◽  
Duan Zhang ◽  
Cormac Ó Coileáin ◽  
Hongjun Xu ◽  
...  
Keyword(s):  
Band Gap ◽  
Elastic Strain ◽  
Strain Engineering ◽  
Continuous Band ◽  
Photoluminescence Enhancement

Property control by elastic strain engineering: Application to graphene

2017 ◽  
Vol 02 (01) ◽  
pp. 1750001 ◽  
Author(s):  
Julia A. Baimova
Keyword(s):  
Physical Properties ◽  
Elastic Strain ◽  
Carbon Nanostructures ◽  
Engineering Application ◽  
Physical And Mechanical Properties ◽  
Strain Engineering ◽  
Applied Strain ◽  
Hydrostatic Tension ◽  
Structural Configurations ◽  
Property Control

Various carbon nanostructures, including graphene, are of great interest nowadays for many applications. It has been shown that graphene has unique physical and mechanical properties and its properties can be controlled by the applied strain. The objective of the present paper is to describe several physical properties of graphene that can be controlled by means of elastic strain engineering. The space of in-plane elastic strain components is divided into regions with different structural configurations and physical properties of graphene. It is shown that a gap in the phonon density of states is observed when graphene is strained close to the appearance of ripples. Sound velocities of unstrained graphene do not depend on the propagation direction but application of strain, apart hydrostatic tension, makes graphene elastically anisotropic. The orientation, amplitude and wavelength of unidirectional ripples in graphene can be controlled by a change in the components of the applied strain.

Elastic strain engineering for ultralow mechanical dissipation (Conference Presentation)

2019 ◽  
Author(s):  
Nils Johan Engelsen ◽  
Amir H. Ghadimi ◽  
Sergey A. Fedorov ◽  
Mohammad J. Bereyhi ◽  
Ryan Schilling ◽  
...  
Keyword(s):  
Elastic Strain ◽  
Strain Engineering ◽  
Mechanical Dissipation

Elastic strain engineering for exceptional mechanical coherence

2018 ◽  
Author(s):  
Nils J. Engelsen ◽  
Amir H. Ghadimi ◽  
Sergey A. Fedorov ◽  
Mohammad J. Bereyhi ◽  
Ryan Schilling ◽  
...  
Keyword(s):  
Elastic Strain ◽  
Strain Engineering
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