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Title: Effects of Rare-Earth (R = Pr, Gd, Ho, Er) Doping on Magnetostructural Phase Transitions and Magnetocaloric Properties in Ni43–xRxMn46Sn11 Shape Memory Alloys

Journal Article · · IEEE Transactions on Magnetics

A series of rare-earth-doped Ni43-xRxMn46Sn11 (x = 0, 1 and R = Pr, Gd, Ho, Er) alloys was fabricated by arc melting, and their structural, magnetic, and magnetocaloric properties were studied through room temperature X-ray diffraction (XRD), differential scanning calorimetry, and magnetization measurements. Analysis of XRD data reveal that the alloys crystallize in the cubic L21 austenite phase structure as the major phase with a small trace of martensitic phase (MP). The martensitic transition temperature (TM) shifts to consecutive higher temperatures with the substitution of Pr, Gd, Ho, and Er. A drastic shift in TM by ~60 K relative to the parent compound (TM = 195 K) was found for Ni42PrMn46Sn11. Large values of magnetic entropy changes (ASM) of 32 (Pr), 28 (Gd), and 25 J · kg-1 · K-1 (Ho) were obtained at TM for ΔH = 50 kOe. A maximum value of the refrigeration capacity of ~250 J · kg-1 was obtained in the vicinity of TM for ΔH = 50 kOe for the Ho-doped compound. Furthermore, a large exchange bias effect with HEB~ 1.1 kOe at 10 K was observed for the Pr-doped compound in its MP.

Research Organization:
Louisiana State Univ., Baton Rouge, LA (United States); Southern Illinois Univ., Carbondale, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
FG02-13ER46946; SC0010521
OSTI ID:
1872888
Journal Information:
IEEE Transactions on Magnetics, Vol. 55, Issue 2; ISSN 0018-9464
Publisher:
Institute of Electrical and Electronics Engineers. Magnetics GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (20)

Giant magnetocaloric effect of MnAs1−xSbx journal November 2001
Magnetic and martensitic transformations of NiMnX(X=In,Sn,Sb) ferromagnetic shape memory alloys journal January 2004
Exchange bias in bulk Mn rich Ni–Mn–Sn Heusler alloys journal December 2007
Magnetocaloric effects in Ni–Mn–X based Heusler alloys with X=Ga, Sb, In journal April 2009
Transition-metal-based magnetic refrigerants for room-temperature applications journal January 2002
Martensitic transitions and the nature of ferromagnetism in the austenitic and martensitic states of Ni Mn Sn alloys journal July 2005
A biosensor based on magnetoresistance technology journal October 1998
Large reversible magnetic entropy change in rapidly solidified Ni0.895Cr0.105MnGe1.05 melt-spun ribbons journal June 2018
Giant Magnetocaloric Effect in Gd5(Si2Ge2) journal June 1997
Magnetocaloric effects and transport properties of rare-earth (R = La, Pr, Sm) doped Ni50-xRxMn35Sn15 Heusler alloys journal September 2017
Itinerant-electron metamagnetic transition and large magnetocaloric effects in La ( Fe x Si 1 x ) 13 compounds and their hydrides journal March 2003
Magnetic and structural phase transitions in Heusler type alloys Ni 2 MnGa x In x journal July 2004
Coexistence of reentrant-spin-glass and ferromagnetic martensitic phases in the Mn 2 Ni 1.6 Sn 0.4 Heusler alloy journal October 2011
Large magnetic entropy change in Ni50Mn50−xInx Heusler alloys journal June 2007
Magnetoresistance and field-induced structural transitions in Ni50Mn50−xSnx Heusler alloys journal February 2008
Giant Magnetoresistance-based Biosensor for Detection of Influenza A Virus journal March 2016
Magnetic-field-induced shape recovery by reverse phase transformation journal February 2006
Magnetic entropy change in Ni51.5Mn22.7Ga25.8 alloy journal June 2000
Inverse magnetocaloric effect in ferromagnetic Ni–Mn–Sn alloys journal May 2005
Recent developments in magnetocaloric materials journal May 2005

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Magnetic field dependence of the martensitic transition and magnetocaloric effects in Ni 49 BiMn 35 In 15 journal January 2020