Open AccessMagnetocaloric effect in multiferroic Y-type hexaferrite Ba0.5Sr1.5Zn2(Fe0.92Al0.08)12O22
Author(s) -
Wangqiong Xu,
Jing Yang,
Yude Shen,
Wei Bai,
Yuanyuan Zhang,
Jia Liu,
Kai Tang,
Zhi Wang,
ChunGang Duan,
Xiaodong Tang,
Junhao Chu
Publication year - 2014
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4883235
Subject(s) - magnetic refrigeration , ferrimagnetism , conical surface , multiferroics , condensed matter physics , materials science , phase transition , paramagnetism , magnetic field , inverse , magnetization , geometry , physics , mathematics , composite material , ferroelectricity , optoelectronics , quantum mechanics , dielectric
Magnetocaloric effect is investigated in multiferroic Ba0.5Sr1.5Zn2(Fe0.92Al0.08)12O22 ceramic with Y-type hexagonal system. Three magnetic transitions, from alternating longitudinal conical to mixed conical at ∼240 K, to ferrimagnetic at ∼297 K, further to paramagnetic at ∼702 K, are unambiguously determined. Furthermore, obvious MCE is shown, and the maximum values of the magnetic entropy change and relative cooling power are evaluated to be 1.53 JKg−1K−1 and 280 JKg−1 for a field change of 7 T, respectively. In addition, inverse MCE is also observed, which might be associated with the first-order magnetic phase transition between two incommensurate longitudinal conical phases