Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1–xAgxCoGe intermetallic compounds

Aryal, Anil; Pandey, Sudip; Dubenko, Igor; Mazumdar, Dipanjan; Stadler, Shane; Ali, Naushad

doi:10.1557/mrc.2018.228

Title: Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn_1–xAg_xCoGe intermetallic compounds

Abstract

The influence of Ag-doping on the crystallographic structure, magnetic properties, and magnetocaloric effects of Mn_1–xAg_xCoGe (0.01 ≤ x ≤ 0.10) is reported. A transformation of crystal structure from orthorhombic to hexagonal was observed at room temperature. Doping Ag in Mn sites results in a first-order magnetostructural transition near room temperature. Furthermore, a Curie-temperature window of 90 K was obtained between the Curie temperatures of the austenite (Ni₂In-type) and martensite (TiNiSi-type) phases. Large magnetic entropy change values of ~22.0 and 9.4 J/kg/K, and refrigerant capacity of 308 and 272 J/kg, were found for x = 0.06 and 0.05, respectively, for μ_oΔH = 5 T.

Authors:

Aryal, Anil ^[1]; Pandey, Sudip ^[1]; Dubenko, Igor ^[1]; Mazumdar, Dipanjan ^[1]; Stadler, Shane ^[2]; Ali, Naushad ^[1]

Southern Illinois Univ., Carbondale, IL (United States)
Louisiana State Univ., Baton Rouge, LA (United States)

Publication Date:: Fri Mar 15 00:00:00 EDT 2019

Research Org.:: Louisiana State Univ., Baton Rouge, LA (United States); Southern Illinois Univ., Carbondale, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1872890

Grant/Contract Number:: FG02-13ER46946; SC0010521

Resource Type:: Accepted Manuscript

Journal Name:: MRS Communications

Additional Journal Information:: Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2159-6859

Publisher:: Materials Research Society - Cambridge University Press

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; magnetocaloric effect; phase transitions

Citation Formats


                    Aryal, Anil, Pandey, Sudip, Dubenko, Igor, Mazumdar, Dipanjan, Stadler, Shane, and Ali, Naushad. Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1–xAgxCoGe intermetallic compounds.  United States: N. p., 2019. 
Web.  doi:10.1557/mrc.2018.228.

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                    Aryal, Anil, Pandey, Sudip, Dubenko, Igor, Mazumdar, Dipanjan, Stadler, Shane, & Ali, Naushad. Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1–xAgxCoGe intermetallic compounds.  United States.  https://doi.org/10.1557/mrc.2018.228

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                    Aryal, Anil, Pandey, Sudip, Dubenko, Igor, Mazumdar, Dipanjan, Stadler, Shane, and Ali, Naushad. Fri .  
"Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1–xAgxCoGe intermetallic compounds".  United States.  https://doi.org/10.1557/mrc.2018.228.  https://www.osti.gov/servlets/purl/1872890.

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@article{osti_1872890,

  title        = {Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1–xAgxCoGe intermetallic compounds},

  author       = {Aryal, Anil and Pandey, Sudip and Dubenko, Igor and Mazumdar, Dipanjan and Stadler, Shane and Ali, Naushad},

  abstractNote = {The influence of Ag-doping on the crystallographic structure, magnetic properties, and magnetocaloric effects of Mn1–xAgxCoGe (0.01 ≤ x ≤ 0.10) is reported. A transformation of crystal structure from orthorhombic to hexagonal was observed at room temperature. Doping Ag in Mn sites results in a first-order magnetostructural transition near room temperature. Furthermore, a Curie-temperature window of 90 K was obtained between the Curie temperatures of the austenite (Ni2In-type) and martensite (TiNiSi-type) phases. Large magnetic entropy change values of ~22.0 and 9.4 J/kg/K, and refrigerant capacity of 308 and 272 J/kg, were found for x = 0.06 and 0.05, respectively, for μoΔH = 5 T.},

  doi          = {10.1557/mrc.2018.228},

  journal      = {MRS Communications},

  number       = 1,

  volume       = 9,

  place        = {United States},

  year         = {Fri Mar 15 00:00:00 EDT 2019},

  month        = {Fri Mar 15 00:00:00 EDT 2019}

}

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Title: Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1–xAgxCoGe intermetallic compounds

Abstract

Citation Formats

Structural and Magnetic Properties of MnFe$_1 - rm x$Co$_rm x$Ge Compounds journal, November 2006

Structural and magnetic phase transitions in CoxNi1−xMnGe system under pressure journal, September 1983

Crystal and magnetic structure of CoMnGe, CoFeGe, FeMnGe and NiFeGe journal, December 1981

From single- to double-first-order magnetic phase transition in magnetocaloric Mn1−xCrxCoGe compounds journal, April 2010

Giant magnetocaloric effects by tailoring the phase transitions journal, April 2010

NMR Study of 55Mn and 59Co in MnCoGe journal, January 1999

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Vacancy induced structural and magnetic transition in MnCo1−xGe journal, December 2006

Large low-field magnetocaloric effect in MnCo0.95Ge1.14 alloy journal, September 2007

Large magnetocaloric effects over a wide temperature range in MnCo 1−x Zn x Ge journal, May 2013

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Giant Magnetocaloric Effect in Gd5(Si2Ge2) journal, June 1997

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Itinerant-electron metamagnetic transition and large magnetocaloric effects in La ( Fe x Si 1 − x ) 13 compounds and their hydrides journal, March 2003

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Title: Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn_1–xAg_xCoGe intermetallic compounds

Structural and Magnetic Properties of MnFe$_1 - rm x$Co$_rm x$Ge Compounds
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Structural and magnetic phase transitions in CoxNi1−xMnGe system under pressure
journal, September 1983

Crystal and magnetic structure of CoMnGe, CoFeGe, FeMnGe and NiFeGe
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From single- to double-first-order magnetic phase transition in magnetocaloric Mn1−xCrxCoGe compounds
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Giant magnetocaloric effects by tailoring the phase transitions
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NMR Study of 55Mn and 59Co in MnCoGe
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