A Study of the Structure and Electronic and Thermal Properties of Quasi-One-Dimensional La3MoO7

A Study of the Magnetic and Thermal Properties of Ln3RuO7 (Ln=Sm, Eu)

“…The plane formed by the¸nO and RuO is parallel to the bc plane and it is separated by the other lanthanum ions,¸n(2), which have seven-fold coordination. The lattice parameters are determined: a" 10 With increasing atomic number of the lanthanide ions (which means decreasing ionic radius of¸n>), the lattice parameter decreases, as expected. The average seven-coordinated Eu}O and six-coordinated Ru}O lengths are 2.37 and 1.94 A s , respectively (see Table 2), which are very near to the values calculated from Shannon's ionic radii (2.39 and 1.945 A s ).…”

Magnetic Properties of the Fluorite-Related La3MO7 Phases, M=Ru and Os

“…One class of materials in this category is represented by the Ln 3 MO 7 series where Ln=a rare earth and M is a pentavalent transition element. Examples include M=Mo, Ru and Ir (4)(5)(6)(7)(8). These compounds crystallize in a structure type which is based on an ordered double fluorite cell in which the Ln 3+ and M 5+ cations order along with the oxide vacancies, resulting in an orthorhombic supercell with aE2a F , bEcEOa F .…”

Magnetic structure of the quasi-one-dimensionalLa3OsO7as determined by neutron powder diffraction

“…The buckling of the MO 6 results in M O M angles of approximately 145° along the chain axis. Members of the RE 3 MO 7 family include RESbO 7 [11], RENbO 7 [11,12], REMoO 7 [13], RERuO 7 [14][15][16], RETaO 7 [11], REReO 7 [17,18], REOsO 7 [19][20][21][22], and REIrO 7 [23,24], which collectively represents a considerable degree of chemical diversity. Possibly due to the zig-zag configuration of the octahedral chains, the electrons are localized on the M cation and therefore prime candidates for one-dimensional magnetic behavior.…”