Synthesize and microstructure characterization of Ni{sub 43}Mn{sub 41}Co{sub 5}Sn{sub 11} Heusler alloy

Journal Article · Fri Jun 17 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4953941· OSTI ID:22609107

Elwindari, Nastiti; Manaf, Azwar ^[1]

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1. Physics Department, Faculty of Science, Universitas Indonesia, Depok 16424 (Indonesia)

The ferromagnetic heusler alloys are promising materials in many technical applications due to their multifunctional properties such as shape memory effect, magnetocaloric effect, giant magnetoresistance, etc. In this work, synthesize and characterization of polycrystalline Ni{sub 43}Mn{sub 41}Co{sub 5}Sn{sub 11} (NMCS) alloy are reported. Alloy preparation was conducted by melting the constitute elements under an innert Argon (Ar) atmosphere in a vacuum mini arc-melting furnace. Homogenization of the microstructure of the as-cast ingot was obtained after annealing process at 750°C for 48 hours. It is shown that the dendrites structure has changed to equaixed grains morphology after homogenization. Microstructure characteristics of material by x-ray diffraction revealed that the alloy has a L{sub 21}-type cubic crystal structure as the main phase at room temperature. In order to induce the shape anisotropy, a forging treatment was applied to show the shape orientation of material. Various enhancements of magnetic properties in a longitudinal direction were observed at various degree of anisotropy. The microstructure changes of as-cast NMCS and effects of homogenization treatments as studied by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) are discussed in details.

• OSTI ID: 22609107
• Journal Information: AIP Conference Proceedings, Vol. 1746, Issue 1; Conference: ICPR 2016: International conference on physics and applied physics research, Yogyakarta (Indonesia), 25-26 Jan 2016, ICIBio 2016: International conference on industrial biology, Yogyakarta (Indonesia), 25-26 Jan 2016, ICIAMath 2016: International conference on information system and applied mathematics, Yogyakarta (Indonesia), 25-26 Jan 2016; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
ANNEALING
COBALT COMPOUNDS
CRYSTAL STRUCTURE
DENDRITES
FERROMAGNETIC MATERIALS
HEUSLER ALLOYS
MAGNETIC PROPERTIES
MAGNETORESISTANCE
MANGANESE COMPOUNDS
MELTING
MICROSTRUCTURE
NICKEL COMPOUNDS
POLYCRYSTALS
SCANNING ELECTRON MICROSCOPY
SHAPE MEMORY EFFECT
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
TIN COMPOUNDS
X-RAY DIFFRACTION