Structures, magnetic, and thermal properties of Ln3MoO7 (Ln=La, Pr, Nd, Sm, and Eu)

Phase transition of the orthorhombic fluorite-related compounds Ln3IrO7 (Ln= Pr, Nd, Sm, Eu)

“…For Ln 3 Sm-Ho) [20][21][22]24], Ln 3 SbO 7 (Ln = Y, Dy, Ho) [20,27], Ln 3 ReO 7 (Ln = Dy, Ho) [16,17], and Gd 3 NbO 7 [20], the space group C222 1 has been applied. On the other hand, the structure for Ln 3 MoO 7 (Ln = La-Nd, Sm, Eu) is well described with different space group P2 1 2 1 2 1 [28][29][30], and the one-dimensional MO 6 alignment is the same for the structures with the space groups Cmcm and C222 1 , but the zig-zag chains of the corner-sharing MO 6 octahedra are parallel to the b-axis in this case.…”

“…Another topic for Ln 3 MO 7 is that detailed magnetic and thermal investigations on the ruthenium-, iridium-and osmiumcontaining members of the Ln 3 MO 7 family show low-temperature structural phase transitions [8][9][10]12,13,19,26,30]. However, the low-temperature structures are, in most cases, not known, or different structures were presented for the same compounds [9,12,13].…”

Magnetic properties of orthorhombic fluorite-related oxides Ln3SbO7 (Ln=rare earths)

“…Although the space group for the La 3 NbO 7 now turned out to be Pnma [2], the space group Cmcm has been applied for many Ln 3 MO 7 compounds . For some compounds such as Ln 3 TaO 7 (Ln = Y, Sm -Ho) [20][21][22]24] and Ln 3 MoO 7 (Ln = La -Nd, Sm, Eu) [27][28][29][30], the space groups C222 1 and P2 1 2 1 2 1 have been applied, respectively.…”

Magnetic properties and structural transitions of orthorhombic fluorite-related compounds Ln3MO7 (Ln=rare earths, M=transition metals)

“…The high-temperature structure of La 3 MoO 7 is illustrated in Fig. 2 In the preceding paper, we briefly reported magnetic properties of Ln 3 MoO 7 compounds [30]. In this study, we performed measurements of magnetic susceptibilities and specific heat for Gd 3 MoO 7 and re-measured magnetic susceptibilities and specific heat of Sm 3 MoO 7 .…”

“…The main feature was a broad maximum at 655 K which was interpreted as due to intra-chain spin corrections of the Mo 5+ ions. Several other anomalies were observed at 483, 140, and 100 K. Then, we prepared a series of LnMoO 7 compounds (Ln = La, Pr, Nd, Sm, and Eu) and reported their crystal structures and magnetic properties [30]. The structures at room temperature were analyzed with the space group [33,39].…”