TY - JOUR
T1 - Neutron-diffraction and Mossbauer-spectroscopy study of La0.6Sr0.4Fe1-xCoxO3-y (x=0, 0.5) perovskites
AU - Neov, S.
AU - Dabrowski, L.
AU - Hofmann, M.
AU - Bouwmeester, Henricus J.M.
PY - 2002
Y1 - 2002
N2 - The crystal and magnetic structure of La0.6Sr0.4Fe1-xCoxO3-y (x=0,0.5) perovskites was studied by neutron diffraction and Mössbauer spectroscopy. At T=2–300 K the oxides possess an oxygen-deficient, rhombohedrally distorted structure, with space group R\overline{3}c. 57Fe Mössbauer spectra below T=154 K show a regular arrangement of Fe spins, determined as a G-type antiferromagnetic structure by neutron diffraction. The mean magnetic moment at T=40 K is 1.61 μB per B-site for x=0.5, and 2.63 μB for the x=0 composition. An increase of TN and oxygen deficiency accompany the heating to 850 K. The structure of La0.6Sr0.4Fe0.5Co0.5O2.84 at 850 K is cubic with space group Pm3m.
AB - The crystal and magnetic structure of La0.6Sr0.4Fe1-xCoxO3-y (x=0,0.5) perovskites was studied by neutron diffraction and Mössbauer spectroscopy. At T=2–300 K the oxides possess an oxygen-deficient, rhombohedrally distorted structure, with space group R\overline{3}c. 57Fe Mössbauer spectra below T=154 K show a regular arrangement of Fe spins, determined as a G-type antiferromagnetic structure by neutron diffraction. The mean magnetic moment at T=40 K is 1.61 μB per B-site for x=0.5, and 2.63 μB for the x=0 composition. An increase of TN and oxygen deficiency accompany the heating to 850 K. The structure of La0.6Sr0.4Fe0.5Co0.5O2.84 at 850 K is cubic with space group Pm3m.
KW - IR-72249
KW - METIS-259134
U2 - 10.1007/s003390201621
DO - 10.1007/s003390201621
M3 - Article
SN - 0947-8396
VL - 74
SP - S664-S666
JO - Applied physics A: Materials science and processing
JF - Applied physics A: Materials science and processing
IS - 1, Suppl.
ER -