TY - JOUR
T1 - Growth and Characterization of CrK(SO4)2•12H2O Crystals Used in Magnetic Adiabatic Refrigerator
AU - Chen, Yuwei
AU - Liu, Ping
AU - Liu, Wang
AU - Wang, Chang
AU - Dai, Wei
AU - Shen, Jun
AU - Zhang, Guochun
AU - Tu, Heng
N1 - Publisher Copyright:
© 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
PY - 2022/12
Y1 - 2022/12
N2 - Paramagnetic salts perform satisfactorily in cryogenic refrigeration, and hydrated salt crystals are usually used as refrigerated materials at a rather low temperature. In this paper, a chromium potassium alum CrK(SO4)2•12H2O (CPA) single crystal with the size of 32 mm×32 mm×20 mm was grown by a slow cooling method. The relationship between the growth condition and crystal morphology was analyzed, and the thermal behavior, infrared spectrum, and magnetic performance of CPA crystal were also investigated. The results reveal that the CPA crystal exhibits a magnetocaloric effect up to 29.75 J•kg-1•K-1 in an applied magnetic field of 7 T at 2 K. A salt pill made by growing the CPA crystals on an array of copper wires in a sealed container was used in a two-stage single-shot adiabatic demagnetization refrigerator, obtaining a no-load temperature of 90 mK.
AB - Paramagnetic salts perform satisfactorily in cryogenic refrigeration, and hydrated salt crystals are usually used as refrigerated materials at a rather low temperature. In this paper, a chromium potassium alum CrK(SO4)2•12H2O (CPA) single crystal with the size of 32 mm×32 mm×20 mm was grown by a slow cooling method. The relationship between the growth condition and crystal morphology was analyzed, and the thermal behavior, infrared spectrum, and magnetic performance of CPA crystal were also investigated. The results reveal that the CPA crystal exhibits a magnetocaloric effect up to 29.75 J•kg-1•K-1 in an applied magnetic field of 7 T at 2 K. A salt pill made by growing the CPA crystals on an array of copper wires in a sealed container was used in a two-stage single-shot adiabatic demagnetization refrigerator, obtaining a no-load temperature of 90 mK.
KW - Crystal growth
KW - Crystal morphology
KW - Magnetocaloric effect
KW - Paramagnetic materials
UR - http://www.scopus.com/inward/record.url?scp=85143620552&partnerID=8YFLogxK
U2 - 10.14062/j.issn.0454-5648.20220528
DO - 10.14062/j.issn.0454-5648.20220528
M3 - Article
AN - SCOPUS:85143620552
SN - 0454-5648
VL - 50
SP - 3270
EP - 3275
JO - Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society
JF - Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society
IS - 12
ER -