Martensitic transformation temperature hysteresis narrowing and magnetocaloric effect in ferromagnetic shape memory alloys Ni-Mn-Ga
- 1. Institute of Magnetism, 03680 Kiev, Vernadskogo 36b (Ukraine)
- 2. Institute of Metal Physics, 03680 Kiev, Vernadskogo 36 (Ukraine)
Description
The hysteresis narrowing and magnetocaloric effect (MCE) were studied in the Ni-Mn-Ga alloys. Ni54Mn24Ga22 and Ni51.9Mn27Ga21.1 were selected in order to obtain specific characteristic temperatures of alloys and to study an influence of several factors on the hysteresis width (δ) of basic austenite-martensite (AM) transformation. The effect of martensite crystal lattice softening due to intermartensitic transition (IT) taking place immediately after AM transformation on δ was examined in alloy 1. MCE was measured in alloy 2, in which Curie temperature (TC) and austenitic start temperature (AS) coincides. It was demonstrated that the hysteresis width δ reaches about 2 K, if IT is enough close to AM transition. MCE was found to have a maximum at TC∼AS
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jmmm.2008.11.077Additional details
Identifiers
- DOI
- 10.1016/j.jmmm.2008.11.077;
- PII
- S0304-8853(08)01205-5;
Publishing Information
- Journal Title
- Journal of Magnetism and Magnetic Materials
- Journal Volume
- 321
- Journal Issue
- 7
- Journal Page Range
- p. 782-785
- ISSN
- 0304-8853
- CODEN
- JMMMDC
Conference
- Title
- 4. Moscow international symposium on magnetism
- Dates
- 20-25 Jun 2008
- Place
- Moscow (Russian Federation)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40058646
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AUSTENITE; AUSTENITIC STEELS; CRYSTAL LATTICES; CURIE POINT; GALLIUM ALLOYS; HYSTERESIS; MAGNETIC PROPERTIES; MANGANESE ALLOYS; MARTENSITE; NICKEL ALLOYS; PHASE TRANSFORMATIONS
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; CRYSTAL STRUCTURE; IRON ALLOYS; IRON BASE ALLOYS; PHYSICAL PROPERTIES; STEELS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION TEMPERATURE
Optional Information
- Copyright
- Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.