Published May 26, 2010 | Version v1
Journal article Metadata-only

First order structural transformation and inverse magnetocaloric effect in melt-spun Ni-Mn-Sn ribbons

Creators

  • 1. Defence Metallurgical Research Laboratory, Hyderabad-500 058 (India)
  • 2. Materials Science Centre, Indian Institute of Technology- Kharagpur, Kharagpur-721302 (India)
  • 3. Centre for Advanced Studies in Materials Science and Condensed Matter Physics, Department of Physics, University of Pune, Pune-411007 (India)

Description

First order structural transformation (FOST) and inverse magnetocaloric effect (IMCE) were investigated in melt-spun ribbons of Ni49Mn37.4Sn13.6 and Ni50Mn34.5Sn15.5 Heusler alloys. Thermal and magnetic characterization of the ribbons revealed the existence of FOST. Interestingly, in the Ni49Mn37.4Sn13.6 ribbon, the structural transformation occurs prior to magnetic transition incongruous to that observed in the Ni50Mn34.5Sn15.5 ribbons. In addition to FOST, the ribbons also exhibit a large IMCE at low magnetic field. A maximum positive magnetic entropy change ΔSM ∼ 6.0 J kg-1 K-1 and ∼1.6 J kg-1 K-1 for a field change of 2 T was observed in the Ni49Mn37.4Sn13.6 and Ni50Mn34.5Sn15.5 ribbons, respectively.

Availability note (English)

Available from http://dx.doi.org/10.1088/0022-3727/43/20/205002

Additional details

Identifiers

DOI
10.1088/0022-3727/43/20/205002;
PII
S0022-3727(10)15765-9;

Publishing Information

Journal Title
Journal of Physics. D, Applied Physics
Journal Volume
43
Journal Issue
20
Journal Page Range
[5 p.]
ISSN
0022-3727
CODEN
JPAPBE

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42057680
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CRYSTAL-PHASE TRANSFORMATIONS; ENTROPY; HEUSLER ALLOYS; INTERMETALLIC COMPOUNDS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; MANGANESE; NICKEL; TIN
Descriptors DEC
ALLOYS; ALUMINIUM ALLOYS; COPPER ALLOYS; COPPER BASE ALLOYS; CORROSION RESISTANT ALLOYS; ELEMENTS; MANGANESE ALLOYS; METALS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS