Open AccessMagnetostriction of (La1-yTby)0.67Sr0.33MnO3 Perovskite
Author(s) -
Wu Jian,
Cao Qing-Qi,
Gu Kun-Ming,
Shiyuan Zhang,
Youwei Du
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.280
Subject(s) - magnetostriction , orthorhombic crystal system , materials science , perovskite (structure) , colossal magnetoresistance , anisotropy , condensed matter physics , magnetoresistance , sintering , diffraction , analytical chemistry (journal) , crystallography , nuclear magnetic resonance , crystal structure , composite material , physics , chemistry , optics , chromatography , quantum mechanics , magnetic field
A series of polycrystaline bulk samples of (La1-yTby)0.67Sr0.33MnO3(y=0,0.05,0.15,0.20,0.25,0.33,0.40,0.50,0.60,1.00) have been prepared by solid-phase reaction sintering. X-ray diffraction patterns show that the rhombohedral structure has been transfered into orthorhombic structure with increasing Tb content y. For the sample with y=0.40, a colossal magnetoresistance up to 900% has been observed at 180K. When μ0H=1.7T, the anisotropic magnetostriction (λt) of -50×10-6 and volume magnetostriction (ω) -130×10-6 have been observed for the samples of y=0.20 at room temperature, and y=0.33 at 210K respectively.