Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1–xAgxCoGe intermetallic compounds
Abstract
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.
- Authors:
-
- Southern Illinois Univ., Carbondale, IL (United States)
- Louisiana State Univ., Baton Rouge, LA (United States)
- Publication Date:
- 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.
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
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.
@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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