TY - JOUR
T1 - Suppression of aqueous corrosion of La(Fe0.88Si 0.12)13 by reducing dissolved oxygen concentration for high-performance magnetic refrigeration
AU - Fujieda, S.
AU - Fukamichi, K.
AU - Suzuki, S.
N1 - Funding Information:
This work was partially supported by a Grant-in-Aid for Young Scientists (B), No. 25709055, from the Japan Society for the Promotion of Science and by Intelligent Cosmos Academic Foundation.
PY - 2014/7/5
Y1 - 2014/7/5
N2 - The itinerant-electron metamagnetic transition of La(Fe 0.88Si0.12)13 becomes indistinct after immersion in distilled-water containing about 8 ppm of the dissolved oxygen (DO) concentration because of aqueous corrosion. However, the aqueous corrosion of La(Fe0.88Si0.12)13 is significantly suppressed by reducing the DO concentration. Thus, isothermal magnetic entropy change after immersion for 30 days in deaerated distilled-water with a DO concentration less than 0.1 ppm is larger than that after immersion for 5 days in distilled-water containing about 8 ppm of the DO concentration. Consequently, the reduction of the DO concentration is effective for preservation of the excellent magnetocaloric effects of La(Fe0.88Si0.12)13 in an aqueous solution, which is a promising heat transfer fluid of room-temperature magnetic refrigeration.
AB - The itinerant-electron metamagnetic transition of La(Fe 0.88Si0.12)13 becomes indistinct after immersion in distilled-water containing about 8 ppm of the dissolved oxygen (DO) concentration because of aqueous corrosion. However, the aqueous corrosion of La(Fe0.88Si0.12)13 is significantly suppressed by reducing the DO concentration. Thus, isothermal magnetic entropy change after immersion for 30 days in deaerated distilled-water with a DO concentration less than 0.1 ppm is larger than that after immersion for 5 days in distilled-water containing about 8 ppm of the DO concentration. Consequently, the reduction of the DO concentration is effective for preservation of the excellent magnetocaloric effects of La(Fe0.88Si0.12)13 in an aqueous solution, which is a promising heat transfer fluid of room-temperature magnetic refrigeration.
KW - Curie temperature
KW - Hydrogen absorption
KW - Isothermal magnetic entropy change
KW - Itinerant-electron metamagnetic transition
KW - Oxidation
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U2 - 10.1016/j.jallcom.2014.01.229
DO - 10.1016/j.jallcom.2014.01.229
M3 - Article
AN - SCOPUS:84896533226
VL - 600
SP - 67
EP - 70
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -