Stress dependence of magnetic shape memory effect and its model

Oleg Heczko (Corresponding Author), Ladislav Straka, Simo-Pekka Hannula

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

The stress dependence of the magnetic shape memory effect (MSME) in Ni50.7Mn28.4Ga20.9 (number indicates at.%) was studied by simultaneous determination of magnetization reversal M = M (H, σ) and magnetic-field-induced strain ɛ = ɛ (H, σ). The experimental dependence is interpreted within the framework of a simple energy model. The model uses only experimentally observable parameters such as magnetic anisotropy constant, saturation magnetization and twinning stress determined from magnetic measurements and mechanical testing. We show that this simple model correctly describes the MSME as a function of external stress and predict the stress limit of MSME.
Original languageEnglish
Pages (from-to)1003-1006
Number of pages4
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume438-440
Issue number3
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Shape memory effect
Magnetization reversal
magnetization
Mechanical testing
Magnetic anisotropy
Twinning
Magnetic variables measurement
Saturation magnetization
twinning
magnetic measurement
Magnetic fields
saturation
anisotropy
magnetic fields
energy

Keywords

  • Ni-Mn-Ga alloys
  • twinning
  • gallium
  • manganese
  • nickel
  • martensite
  • nickel-based alloys
  • HRTEM
  • X-ray diffraction
  • Ni-Mn-Ga magnetic shape memory alloy
  • giant magnetic-field-induced strain
  • ferromagnetic martensite
  • modelling of magnetic shape memory effect

Cite this

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title = "Stress dependence of magnetic shape memory effect and its model",
abstract = "The stress dependence of the magnetic shape memory effect (MSME) in Ni50.7Mn28.4Ga20.9 (number indicates at.{\%}) was studied by simultaneous determination of magnetization reversal M = M (H, σ) and magnetic-field-induced strain ɛ = ɛ (H, σ). The experimental dependence is interpreted within the framework of a simple energy model. The model uses only experimentally observable parameters such as magnetic anisotropy constant, saturation magnetization and twinning stress determined from magnetic measurements and mechanical testing. We show that this simple model correctly describes the MSME as a function of external stress and predict the stress limit of MSME.",
keywords = "Ni-Mn-Ga alloys, twinning, gallium, manganese, nickel, martensite, nickel-based alloys, HRTEM, X-ray diffraction, Ni-Mn-Ga magnetic shape memory alloy, giant magnetic-field-induced strain, ferromagnetic martensite, modelling of magnetic shape memory effect",
author = "Oleg Heczko and Ladislav Straka and Simo-Pekka Hannula",
year = "2006",
doi = "10.1016/j.msea.2006.01.107",
language = "English",
volume = "438-440",
pages = "1003--1006",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier",
number = "3",

}

Stress dependence of magnetic shape memory effect and its model. / Heczko, Oleg (Corresponding Author); Straka, Ladislav; Hannula, Simo-Pekka.

In: Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, Vol. 438-440, No. 3, 2006, p. 1003-1006.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Stress dependence of magnetic shape memory effect and its model

AU - Heczko, Oleg

AU - Straka, Ladislav

AU - Hannula, Simo-Pekka

PY - 2006

Y1 - 2006

N2 - The stress dependence of the magnetic shape memory effect (MSME) in Ni50.7Mn28.4Ga20.9 (number indicates at.%) was studied by simultaneous determination of magnetization reversal M = M (H, σ) and magnetic-field-induced strain ɛ = ɛ (H, σ). The experimental dependence is interpreted within the framework of a simple energy model. The model uses only experimentally observable parameters such as magnetic anisotropy constant, saturation magnetization and twinning stress determined from magnetic measurements and mechanical testing. We show that this simple model correctly describes the MSME as a function of external stress and predict the stress limit of MSME.

AB - The stress dependence of the magnetic shape memory effect (MSME) in Ni50.7Mn28.4Ga20.9 (number indicates at.%) was studied by simultaneous determination of magnetization reversal M = M (H, σ) and magnetic-field-induced strain ɛ = ɛ (H, σ). The experimental dependence is interpreted within the framework of a simple energy model. The model uses only experimentally observable parameters such as magnetic anisotropy constant, saturation magnetization and twinning stress determined from magnetic measurements and mechanical testing. We show that this simple model correctly describes the MSME as a function of external stress and predict the stress limit of MSME.

KW - Ni-Mn-Ga alloys

KW - twinning

KW - gallium

KW - manganese

KW - nickel

KW - martensite

KW - nickel-based alloys

KW - HRTEM

KW - X-ray diffraction

KW - Ni-Mn-Ga magnetic shape memory alloy

KW - giant magnetic-field-induced strain

KW - ferromagnetic martensite

KW - modelling of magnetic shape memory effect

U2 - 10.1016/j.msea.2006.01.107

DO - 10.1016/j.msea.2006.01.107

M3 - Article

VL - 438-440

SP - 1003

EP - 1006

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 3

ER -