Interplay of 3d - and 5d -sublattice magnetism in the double perovskite substitution series La2Zn

A comparative study on magnetic order and field-induced magnetic transition in double perovskite iridates: RE2ZnIrO6 and RE2MgIrO6 (RE = Pr, Nd, Sm, Eu, Gd)

“…As a comparison, this typical FM behaviors are contrast to magnetic behaviors reported quite recently in Gd2ZnIrO6, where it exhibits wasp-waist-like hysteresis and small remnant magnetization (Mr~1.5 B/f.u.) [22]. As shown in the inset of figure 7(a), its magnetization saturates at ~20 T with MS=14.8μB/f.u, this value is consistent with the theoretical saturated moments (2 1) /f.u.=(2 0.8 4+1) /f.u.= J M g J       7.4μB/f.u.…”

“…The observed metamagnetic transitions in RE2BTiO6 (RE=Pr,Nd, Sm) correspond to the spin-flop transition from AFM to C-AFM state. For Nd2ZnIrO6, quite recent neutron diffraction reveals Nd 3+ moments have AFM state, where magnetic propagation vector along (1/2 1/2 0) at zero field [22]. As field above HC1, further increased magnetizations favor the C-AFM state.…”

Complex magnetic properties in the mixed 4f−5d double perovskite iridates X2ZnIrO6(Vogl1, Morrow2, Aczel3 et al. 2020Phys. Rev. MaterialsSelf Cite123150View full textAdd to dashboardCite

“…Double perovskites with the general formula A2BB'O6 offer the opportunity to tune and examine their ground states by inserting a variety of different ions on both the A-and B-sites [4][5][6]. This has been widely used in the past to study the interplay of 3d-and 5d-metals on either B-site, in compounds such as La2TMIrO6 (TM = Co, Ni, Cu) and AE2TMOsO6 (AE = Ca, Sr; TM = Cr, Fe, Co, Ni) [7][8][9][10][11][12][13][14]. The physical properties of double perovskites with two magnetic B-cations have been thoroughly studied for both iridates and osmates.…”

Unraveling the magnetic interactions and spin state in insulating Sr$_{2-x}$La$_x$CoNbO$_6$

“…For example, a significantly different behavior of electronic transport has been reported in La 1+x A 1−x CoRuO 6 (A = Ca, Sr) with hole and electron doping [16,32]. More recently, the spin-orbit coupling in Ir and magnetic interactions between Co 3d and Ir 5d (spatially extended orbitals) moments have been studied along with spin-state transition between HS/LS-Co 2+ /LS-Ir 4+ to HS-Co 3+ /LS-Ir 5+ in La 2−x Sr x CoIrO 6 systems [34][35][36][37][38]. Also, the effect of small ionic mismatch between B-site cations and mixed valance states in various Co-based double pervoskites A 2 CoBO 6 (A = Sr, Ca, Ba, Y, La and B = Mn, Fe) results in exciting phenomenon like large magnetoresistance, exchange bias, spin-glass, cluster-glass, memory effect, multiferroicity, magnetocaloric, and thermoelectric effects [39][40][41][42][43][44][45], which are crucial for various device applications.…”