Nonmagnetic ordering state of single-crystal SrTm${}_2$O${}_4$: A polarized and unpolarized neutron-scattering study

Abstract

Our single-crystal polarized neutron scattering at 65 mK and powder unpolarized neutron diffraction at 0.5 K show no evidence for a long-range magnetic order and even detect no sign of diffuse magnetic neutron scattering in single-crystal SrTm2O4. The data refinements reveal that the two TmO6 octahedral distortion modes are the same as those of the TbO6 octahedra in SrTb2O4, i.e., one distortion is stronger than the other one especially at low temperatures, which is attributed probably to different crystal electric fields for the two inequivalent octahedra. Consequently, we conclude that SrTm2O4 has no magnetic order, neither long-ranged nor short-ranged, even down to 65 mK. Therefore, SrTm2O4 is a different compound from its brethren in the new family of frustrated SrRE2O4 (RE = Gd, Tb, Dy, Ho, Er, and Yb) magnets. We propose that crystal field anisotropy may dominate over weak dipolar spin interactions in SrTm2O4, leading to a virtually nonmagnetic ordering state.

9 pages, 6 figures, 2 Tables

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Cited by in corpus (10)

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• Enhanced magnetocaloric effect and magnetic phase diagrams of single-crystal GdCrO${}_3$
• Dimensionality and irreversibility of field-induced transitions in SrDy2O4
• Absence of long range order in the frustrated magnet SrDy${}_2$O${}_4$ due to trapped defects from a dimensionality crossover
• High-temperature magnetism and crystallography of a YCrO${}_3$ single crystal
• Crystalline and magnetic structures, magnetization, heat capacity and anisotropic magnetostriction effect in a yttrium-chromium oxide
• Super-Necking Crystal Growth and Structural and Magnetic Properties of SrTb${}_2$O${}_4$ Single Crystals
• Coexistence of magnetic fluctuations and long-range orders in the one-dimensional $J_1-J_2$ zigzag chains materials BaDy${}_2$O${}_4$ and BaHo${}_2$O${}_4$
• Crystal field effects in the zig-zag chain compound SrTm${}_2$O${}_4$
• Ground and Applied-Field-Driven Magnetic States of Antiferromagnets