Phase diagram and magnetocaloric effects in Ni{sub 50}Mn{sub 35}(In{sub 1−x}Cr{sub x}){sub 15} and (Mn{sub 1−x}Cr{sub x})NiGe{sub 1.05} alloys

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4866082· OSTI ID:22273810

Quetz, Abdiel; Muchharla, Baleeswaraiah; Dubenko, Igor; Talapatra, Saikat; Ali, Naushad ^[1]; Samanta, Tapas; Stadler, Shane ^[2]

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1. Southern Illinois University, Carbondale, Illinois 62901 (United States)
2. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803 (United States)

The magnetocaloric and thermomagnetic properties of Ni{sub 50}Mn{sub 35}(In{sub 1−x}Cr{sub x}){sub 15} and (Mn{sub 1−x}Cr{sub x}) NiGe{sub 1.05} systems for 0 ≤ x ≤ 0.105 and 0 ≤ x ≤ 0.1, respectively, have been studied by x-ray diffraction, differential scanning calorimetry, and magnetization measurements. Partial substitution of Cr for Mn in (Mn{sub 1−x}Cr{sub x})NiGe{sub 1.05} results in a first order magnetostructural transition from a hexagonal paramagnetic to an orthorhombic paramagnetic phase near T{sub M} ∼ 380 K (for x = 0.07). Partial substitution of Cr for In in Ni{sub 50}Mn{sub 35}(In{sub 1−x}Cr{sub x}){sub 15} shifts the magnetostructural transition to a higher temperature (T = T{sub M} ∼ 450 K) for x = 0.1. Large magnetic entropy changes of ΔS = −12 (J/(kgK)) and ΔS = −11 (J/(kgK)), both for a magnetic field change of 5 T, were observed in the vicinity of T{sub M} for (Mn{sub 1−x}Cr{sub x})NiGe{sub 1.05} and Ni{sub 50}Mn{sub 35}(In{sub 1−x}Cr{sub x}){sub 15}, respectively.

• OSTI ID: 22273810
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALORIMETRY
CHROMIUM
DIFFERENTIAL THERMAL ANALYSIS
ENTROPY
GERMANIUM
INDIUM
INTERMETALLIC COMPOUNDS
MAGNETIC FIELDS
MAGNETIZATION
MANGANESE
NICKEL
ORTHORHOMBIC LATTICES
PARAMAGNETISM
PHASE DIAGRAMS
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION