Premium
Preparation, Dielectric, and Magnetic Characteristics of LuFe 2 O 4 Ceramics
Author(s) -
Qin Ying,
Liu Xiao Qiang,
Wu Yong Jun,
Chen Xiang Ming
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12348
Subject(s) - dielectric , ferrimagnetism , materials science , activation energy , relaxation (psychology) , ceramic , phase transition , analytical chemistry (journal) , mineralogy , chemistry , condensed matter physics , magnetic field , magnetization , composite material , physics , psychology , social psychology , optoelectronics , chromatography , quantum mechanics
Preparation of LuFe 2 O 4 ceramics under vacuum environment was investigated together with the structural, dielectric, and magnetic characterization. Single‐phase LuFe 2 O 4 could be obtained by the present process and the crystal structure was identified to be rhombohedral in space group < b > R3 ¯ m < / b > . An obvious dielectric relaxation with activation energy of 0.29 eV was observed between 175 and 275 K. The Néel temperature of the present ceramics was ~250 K, and a reentrant spin glass transition was indicated at ~216 K. Two anomalies were observed in the DSC curve, which were relative with the ferrimagnetic transition and 2D–3D charge ordering transition of LuFe 2 O 4 . Meanwhile, a remarkable decrease appeared in the dielectric constant of the as‐magnetized LuFe 2 O 4 sample, implying the magnetodielectric effect in the present ceramics.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom