TY - JOUR
T1 - Magnetic structure of La1.2Tb0.8CuO4
AU - Lappas, Alexandros
AU - Prassides, Kosmas
PY - 1996/6/21
Y1 - 1996/6/21
N2 - A high-intensity powder neutron diffraction study of La1.2Tb0.8CuO4 which has the tetragonal T*-structure shows that the compound orders antiferromagnetically with a magnetic structure which can be described by employing a magnetic propagation vector, τ = (-1/2, 1/2, 0) perpendicular to the Cu2+ spin direction, S = (1/2, 1/2, 0) (identical to that of La2CuO4). The staggered Cu2+ moment at 1.6 K is 0.46 (6) μB. However, non-collinear spin structures are also possible. The appearance of magnetic diffuse scattering at low temperatures is interpreted as the signature of short range magnetic ordering of the Tb3+ ions. Essentially unchanged magnetic behaviour is found in the lightly-doped La1.19Tb0.8Sr0.01CuO4 and La1.2Tb0.79Ce0.01CuO4 materials.
AB - A high-intensity powder neutron diffraction study of La1.2Tb0.8CuO4 which has the tetragonal T*-structure shows that the compound orders antiferromagnetically with a magnetic structure which can be described by employing a magnetic propagation vector, τ = (-1/2, 1/2, 0) perpendicular to the Cu2+ spin direction, S = (1/2, 1/2, 0) (identical to that of La2CuO4). The staggered Cu2+ moment at 1.6 K is 0.46 (6) μB. However, non-collinear spin structures are also possible. The appearance of magnetic diffuse scattering at low temperatures is interpreted as the signature of short range magnetic ordering of the Tb3+ ions. Essentially unchanged magnetic behaviour is found in the lightly-doped La1.19Tb0.8Sr0.01CuO4 and La1.2Tb0.79Ce0.01CuO4 materials.
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U2 - 10.1039/ft9969202151
DO - 10.1039/ft9969202151
M3 - Article
AN - SCOPUS:33748602111
VL - 92
SP - 2151
EP - 2153
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 12
ER -