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 -