Title :
Unusual behaviour of magnetization, magnetostriction and magnetoresistance of Eu/sub 0.55/Sr/sub 0.45/MnO/sub 3/ manganite
Author :
Abramovich, A.I. ; Koroleva, L.I. ; Michurin, A.V. ; Gorbenko, O.Yu. ; Kaul, A.R.
Author_Institution :
Lomonosov (M.V.) State Univ., Moscow, Russia
Abstract :
Summary form only given. Eu/sub 1-x/Sr/sub x/MnO/sub 3/ series is scantly explored among manganites. This series is intriguing because unlike the other manganites, compounds with 0 /spl les/ x /spl les/ 0.5 are semiconductors and show ferromagnetic (FM) behaviour around x = 0.4. In this work we have studied magnetic, elastic, magnetoelastic, transport and magnetotransport properties of Eu/sub 0.55/Sr/sub 0.45/MnO/sub 3/ ceramic and have found the close relation between them. We find that Eu/sub 0.55/Sr/sub 0.45/MnO/sub 3/ is a heavily doped AFM semiconductor EuMnO/sub 3/ in which, as we propose, an inhomogeneous magnetic state is realized.
Keywords :
antiferromagnetic materials; ceramics; colossal magnetoresistance; europium compounds; ferromagnetic-antiferromagnetic transitions; heavily doped semiconductors; magnetic semiconductors; magnetisation; magnetostriction; strontium compounds; AFM-FM state transition; Eu/sub 0.55/Sr/sub 0.45/MnO/sub 3/; Eu/sub 0.55/Sr/sub 0.45/MnO/sub 3/ manganite; heavily doped AFM semiconductor; inhomogeneous magnetic state; magnetization; magnetoresistance; magnetostriction; Colossal magnetoresistance; Conductivity; Magnetic fields; Magnetic properties; Magnetic semiconductors; Magnetoelasticity; Magnetostriction; Saturation magnetization; Strontium; Temperature;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001332
