Retaining large and adjustable elastic strains of kilogram-scale Nb nanowires [Better Superconductor by Elastic Strain Engineering: Kilogram-scale Free-Standing Niobium Metal Composite with Large Retained Elastic Strains]
- China Univ. of Petroleum, Beijing (China). State Key lab. of Heavy Oil Processing
- Xi'an Jiaotong Univ. (China). State Key Lab. for Mechanical Behavior of Materials and Frontier Inst. of Science and Technology
- Univ. of Western Australia, Crawley, WA (Australia). School of Mechanical and Chemcial Engineering; China Univ. of Petroleum, Beijing (China). State Key lab. of Heavy Oil Processing
- Univ. of Western Australia, Crawley, WA (Australia). School of Mechanical and Chemcial Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Div.; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
- Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Div.
- Beijing Univ. of Technology, (China). Inst. of Microsctructure and Properties of Advanced Materials
- Northern Illinois Univ., DeKalb, IL (United States). Dept. of Physics
- Xi'an Jiaotong Univ. (China). State Key Lab. for Mechanical Behavior of Materials and Frontier Inst. of Science and Technology; Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Nuclear Science and Engineering and Dept. of Materials Science and Engineering
Crystals held at ultrahigh elastic strains and stresses may exhibit exceptional physical and chemical properties. Individual metallic nanowires can sustain ultra-large elastic strains of 4-7%. However, retaining elastic strains of such magnitude in kilogram-scale nanowires is challenging. Here, we find that under active load, ~5.6% elastic strain can be achieved in Nb nanowires in a composite material. Moreover, large tensile (2.8%) and compressive (-2.4%) elastic strains can be retained in kilogram-scale Nb nanowires when the composite is unloaded to a free-standing condition. It is then demonstrated that the retained tensile elastic strains of Nb nanowires significantly increase their superconducting transition temperature and critical magnetic fields, corroborating ab initio calculations based on BCS theory. This free-standing nanocomposite design paradigm opens new avenues for retaining ultra-large elastic strains in great quantities of nanowires and elastic-strain-engineering at industrial scale.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1261336
- Journal Information:
- ACS Applied Materials and Interfaces, Vol. 8, Issue 5; ISSN 1944-8244
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
“Lattice Strain Matching”‐Enabled Nanocomposite Design to Harness the Exceptional Mechanical Properties of Nanomaterials in Bulk Forms
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journal | September 2019 |
Superconducting straintronics via the proximity effect in superconductor–ferromagnet nanostructures
|
journal | January 2020 |
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