skip to main content

SciTech ConnectSciTech Connect

Title: High strain in polycrystalline Ni{sub 48.8}Mn{sub 31.4}Ga{sub 19.8} Heusler alloys under overlapped static and oscillating magnetic fields

Martensitic polycrystalline Ni{sub 48.8}Mn{sub 31.4}Ga{sub 19.8} Heusler alloys, with a stacking period of 14 atomic planes at room temperature, were innovatively processed by combining high-energy ball milling and powder metallurgy. Bulk samples were mechanically coupled to a piezoelectric material in a parallel configuration, and the mechanical deformation of the studied system due to the twin's variant motion was investigated under overlapped static and oscillating magnetic fields. A reversible and high mechanical deformation is observed when the frequency of the oscillating magnetic field is tuned with the natural vibration frequency of this system. In this condition, a linear deformation as a function of the static magnetic field amplitude occurs in the ±4 kOe range, and a mechanical deformation of 2% at 10 kOe is observed.
Authors:
; ; ;  [1] ;  [2] ; ; ;  [3]
  1. Department of Physics, State University of Maringá, Av. Colombo 5790, Maringá - PR 87020-900 (Brazil)
  2. Technological Federal University of Paraná, Av. Alberto Carazzai 1640, Cornélio Procópio - PR 86300-000 (Brazil)
  3. Department of Physics, Federal University of São Carlos, Rod. Washington Luiz, Km 235, São Carlos - SP 13565-905 (Brazil)
Publication Date:
OSTI Identifier:
22306024
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DEFORMATION; GALLIUM COMPOUNDS; HEUSLER ALLOYS; MAGNETIC FIELDS; MANGANESE COMPOUNDS; MARTENSITIC STEELS; NICKEL COMPOUNDS; PIEZOELECTRICITY; POLYCRYSTALS; POWDER METALLURGY; TEMPERATURE RANGE 0273-0400 K; TERNARY ALLOY SYSTEMS