Magnetic properties of lithium-containing rare earth garnets Li₃RE₃Te₂O₁₂ (RE = Y, Pr, Nd, Sm-Lu)

Abstract

The synthesis, structural description, temperature dependent magnetic susceptibilities and field dependent magnetizations of a series of rare earth garnets of the form Li3RE3Te2O12 (RE = Y, La, Pr, Nd, Sm-Lu) are reported. The structure of Li3Dy3Te2O12 is refined from powder X-ray diffraction data. The field dependent magnetizations saturate for some of the members by 9 Tesla at 2 K. Of particular interest for further study in this family is the behavior of the Pr, Tb, Dy and Yb garnets.

A New Family of Disorder-Free Rare-Earth-Based Kagome Lattice Magnets: Structure and Magnetic Characterizations of RE3BWO9 (RE = Pr, Nd, Gd–Ho) Boratotungstates

“…Additionally, in such RE-based magnetic oxides, the coordination environment of RE 3+ ions and resulting CEF can strongly affect its magnetic properties. To more clearly clarify their magnetic behaviors, here we do comparisons on magnetic parameters of present RE 3 BWO 9 with various RE-based frustrated magnets, including the same 8-fold coordinated RE 3 Sb 3 Mg 2 O 14 (RE = Pr–Ho), pyrochlore RE 2 Ti 2 O 7 (RE = Gd–Ho), ,− RE 2 Sn 2 O 7 (RE = Pr–Ho) and RE 2 Pb 2 O 7 (R = Pr–Gd), and 6-fold coordinated KBaRE­(BO 3 ) 2 (RE = Gd–Ho), 12-fold REZnAl 11 O 19 (RE = Pr–Tb), NaRES 2 (RE = Nd–Ho) systems, and Li 3 RE 3 Te 2 O 12 (RE = Pr–Ho), as shown in Figure a and b. For all compounds, the effective moments obtained from high-temperature fit give good consistency with values of free RE 3+ ions.…”

Triangular Rare-Earth Lattice Materials RbBaR(BO3)2 (R = Y, Gd–Yb) and Comparison to the KBaR(BO3)2 Analogs

“…The coordination environment and resulting crystal electric field make an important contribution to the magnetic character of the R elements. Here the experimental magnetization of various R -based models, including eight-fold coordinated R 2 Ti 2 O 7 pyrochlores, − eight-fold coordinated R 2 Ge 2 O 7 ( R = Gd–Yb) germinates, six-fold coordinated KBa R (BO 3 ) 2 ( R = Gd–Yb), and eight-fold coordinated Li 3 R 3 Te 2 O 12 ( R = Gd–Yb) garnets, are summarized (Figures and ).…”

“…Geometrically frustrated magnets (GFMs) are typically based on corner- or edge-sharing triangular or tetrahedral units, in which magnetic cations carry the spins. − With different arrangements of geometric units such as triangular, − honeycomb, , kagomé, − pyrochlore, garnet, hyper-kagomé, , and kagomé staircase lattices, the frustrated networks display evolving magnetic characteristics. To date, interesting magnetic ground states have been proposed for several rare-earth ( R )-based materials with frustrating magnetic networks, including spin ice behavior in Ho 2 Ti 2 O 7 − and Dy 2 Ti 2 O 7 , , spin liquid behavior in Tb 2 Ti 2 O 7 , − and quantum spin liquid behavior in YbMgGaO 4 . − …”

Spin liquid state in a rare-earth hyperkagome lattice

“…The crystal structure of LYTO was confirmed by the Rietveld refinement of X-ray diffraction data using GSAS software [51]. All the XRD peaks could be indexed with the cubic space group Ia 3d and lattice parameter a = 12.173 Å [50]. No secondary phase is detected in XRD and the Rietveld refinement of XRD data rules out the presence of any inter-site disorder between the constituent atoms.…”

“…Polycrystalline samples of Li 3 Yb 3 Te 2 O 12 (henceforth LYTO) were synthesized by a standard solid-state reaction of Li 2 CO 3 (99.0 %, Alfa Aesar), Yb 2 O 3 (99.998 %, Alfa Aesar), and TeO 2 (99.9995 %, Alfa Aesar) [50]. Since the lanthanide-oxide and Li 2 CO 3 are generally hygroscopic, before being weighted, Yb 2 O 3 and Li 2 CO 3 were preheated at 900 • C and 100 • C, respectively.…”