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Title: Room temperature giant magnetostriction in single-crystal nickel nanowires

Journal Article · · NPG Asia Materials
ORCiD logo [1];  [2];  [3];  [4]; ORCiD logo [5]; ORCiD logo [5];  [3];  [6]; ORCiD logo [3];  [3]; ORCiD logo [7]
  1. New Mexico State Univ., Las Cruces, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  3. Univ. of California, San Diego, La Jolla, CA (United States)
  4. New Mexico State Univ., Las Cruces, NM (United States)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Colorado State Univ., Fort Collins, CO (United States)
  7. New Mexico State Univ., Las Cruces, NM (United States); Univ. of California, San Diego, La Jolla, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Rensselaer Polytechnic Inst., Troy, NY (United States)

Magnetostriction is the emergence of a mechanical deformation induced by an external magnetic field. The conversion of magnetic energy into mechanical energy via magnetostriction at the nanoscale is the basis of many electromechanical systems such as sensors, transducers, actuators, and energy harvesters. However, cryogenic temperatures and large magnetic fields are often required to drive the magnetostriction in such systems, rendering this approach energetically inefficient and impractical for room-temperature device applications. Here, we report the experimental observation of giant magnetostriction in single-crystal nickel nanowires at room temperature. We determined the average values of the magnetostrictive constants of a Ni nanowire from the shifts of the measured diffraction patterns using the 002 and 111 Bragg reflections. At an applied magnetic field of 600 Oe, the magnetostrictive constants have values of lambda(100) = -0.161% and lambda(111) = -0.067%, two orders of magnitude larger than those in bulk nickel. Using Bragg coherent diffraction imaging (BCDI), we obtained the three-dimensional strain distribution inside the Ni nanowire, revealing nucleation of local strain fields at two different values of the external magnetic field. Our analysis indicates that the enhancement of the magnetostriction coefficients is mainly due to the increases in the shape, surface-induced, and stress-induced anisotropies, which facilitate magnetization along the nanowire axis and increase the total magnetoelastic energy of the system.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
US Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
89233218CNA000001; SC0001805; AC02-06CH11357
OSTI ID:
1572337
Alternate ID(s):
OSTI ID: 1643706
Report Number(s):
LA-UR-19-26170
Journal Information:
NPG Asia Materials, Vol. 11, Issue 1; ISSN 1884-4049
Publisher:
Nature Publishing Group AsiaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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