Structural characterization and semiconducting properties of new iridium(IV) perovskites

Weak ferromagnetic insulator with huge coercivity in monoclinic double perovskite La2CuIrO6

“…The resulted lattice parameters are listed in Table I from the Rietveld refinements. The obtained lattice parameters are different from those in P2 1 /n structure of La 2 CuIrO 6 , although the cell volume is comparable with that of the literature [33]. For example, β~126° is larger than ~87° in early works [32,33], indicating a considerably tilted crystal cell resulting in a much longer c-axis parameter.…”

Strong ferromagnetism induced by canted antiferromagnetic order in double perovskite iridates(La1−xSrx)2ZnIrO6Zhu1, Lu2, Wei3 et al. 2015Phys. Rev. B525120View full textAdd to dashboardCite

“…The low t is evidenced by the highly insulating behavior of La 2 ZnIrO 6 , whose electrical resistivity (see Fig. S3 in the Supplemental Material [42]) is higher than that of most of the iridiates [14,15,19,21,25,30,[62][63][64][65][66][67][68][69][70][71][72]. The weak isotropic AFM interaction hence results in a strong FM component (∼ 0.33μ B /Ir, which is the largest among other iridates that have Ir 4+ as the only magnetic ion).…”

“…While there has been considerable work in exploring and understanding novel magnetic properties of other iridates (e.g., pyrochlores [14][15][16][17][18][19][20], honeycomb lattice [5,[21][22][23][24], and perovskites [25][26][27][28]), the highly localized double perovskites A 2 BIrO 6 have been much less intensively studied [29][30][31][32][33][34][35][36][37][38] and their magnetic properties remain to be fully understood. Using the prototypical La 2 ZnIrO 6 as an example, magnetic susceptibility measurement indicates a paramagnetic (PM)-to-ferromagnetic (FM)-like transition around 7.5 K [29,31], however, recent density functional theory calculations suggest that the low-temperature ground state should be canted antiferromagnetism instead of FM order [39].…”

Phase behavior and some properties of LaMn1−xRhxO3 solid solution

“…Cation ordering in the GdFeO 3 -type structure is known for several La 2 BB O 6 mixed oxides and sometimes leads to a monoclinic space group with a monoclinic angle β very close to 90 • [28][29][30]. Taking it into consideration, Rietveld refinement with the space group P2 1 /n (No.…”