TY - JOUR AU - Phan, M.H. AU - Frey, N.A. AU - Angst, M. AU - de Groot, J. AU - Sales, B.C. AU - Mandrus, D.G. AU - Srikanth, H. TI - Complex magnetic phases in LuFe2O4 JO - Solid state communications VL - 150 SN - 0038-1098 CY - New York, NY [u.a.] PB - Elsevier Science M1 - PreJuSER-8842 PY - 2010 N1 - The work at USF was supported by DOE BES Physical Behavior of Materials Program through grant number DE-FG02-07ER46438. The research at ORNL was sponsored by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, US Department of Energy. AB - DC magnetization and AC susceptibility measurements on LuFe2O4 single crystals reveal a ferrimagnetic transition at 240 K followed by additional magnetic transitions at 225 K and 170 K, separating cluster glass phases, and a kinetically arrested state below 55 K. The origin of giant magnetic coercivity is attributed to the collective freezing of ferrimagnetic clusters and enhanced domain wall pinning associated with a structural transition at 170 K. Magnetocaloric effect measurements provide additional vital information about the multiple magnetic transitions and the glassy states. Our results lead to the emergence of a complex magnetic phase diagram in LuFe2O4. (C) 2009 Elsevier Ltd. All rights reserved. KW - J (WoSType) LB - PUB:(DE-HGF)16 UR - <Go to ISI:>//WOS:000275391100009 DO - DOI:10.1016/j.ssc.2009.11.030 UR - https://juser.fz-juelich.de/record/8842 ER -