Magnetic ordering in rare-earth fluorides withKY3F10structure and axial moments

Paramagnetic properties of cubic RbSm3F10 and KHo3F10

“…Also plotted are susceptibilities calculated theoretically for both the free Sm 3C ion and using experimentally determined crystal field parameters for Sm 3C in the KY 3 F 10 lattice. The dominant feature in both calculated plots is curvature due to the presence of the excited 6 H 7/2 multiplet at 1108 cm K1 above the ground 6 et al [7] and Wells et al [8]. Their results are rather close, within 7% for second-and fourth-order parameters, and yield similar results.…”

“…Compounds with this structure have been reported for rare earths from Sm through Tb incorporating Rb, and for Tb through Lu incorporating K [2,3]. We have previously observed magnetic order in a number of these materials, including several which contain three orthogonal Ising lattices [4][5][6]. Some of these, surprisingly, are ferromagnets.…”

Electron paramagnetic resonance parameters and local structure for Gd3+ in KY3F10

“…The Y 3+ may be described as occupying the approximate face centers of a simple cubic lattice with a cube edge half the value of the full structure and located at the vertices of a network of corner-sharing octahedra [1,2,16]. Thus, the impurity Gd 3+ is surrounded by eight nearest F − ions forming an antiprism [GdF 8 ] 5− cluster.…”

“…Rare-earth fluorides (KR 3 F 10 , where R=Dy 3+ , Er 3+ , Yb 3+ , denotes rare-earth ions substituting for Y 3+ in KY 3 F 10 ) with KY 3 F 10 structure have attracted a lot of attention due to their novel magnetic properties, e.g., nearly complete (Ising) anisotropy of the magnetic moments along the local symmetry axis (or C 4 axis) and three orthogonal Ising lattices [1][2][3]. In addition, KY 3 F 10 exhibit useful laser and luminescence properties when doped with Er 3+ , Eu 3+ , Ho 3+ and Pr 3+ [4][5][6][7][8][9][10][11].…”

Critical behaviors of bond and crystal field dilution Blume–Emery–Griffiths model

“…When Dy +3 , Er +3 and Yb +3 substitute for Y +3 in the compounds, a transition to a ferromagnetic state at low temperature is observed as a function of uniaxial crystal field, the magnitudes of the exchange and biquadratic interaction [19,20].…”