Incommensurate magnetic order in Sm${}_3$BWO${}_9$ with the distorted kagome lattice

Abstract

We investigate the magnetic ground state of Sm${}_3$BWO${}_9$ with the distorted kagome lattice. A magnetic phase transition is identified at $T_N=0.75$ K from the temperature dependence of specific heat. From ${}^{11}$B nuclear magnetic resonance (NMR) measurements, an incommensurate magnetic order is shown by the double-horn type spectra under a $c$-axis magnetic field. While, absence of line splitting is observed for field oriented within the $ab$-plane, indicating the incommensurate modulation of the internal field strictly along $c$-axis. From the spin dynamics, the critical slowing down behavior is observed in the temperature dependence of $1/T_1$ with ${\mu }_{0}H\perp c$-axis, which is completely absent in that with ${\mu }_{0}H||c$-axis. Based on the local symmetry of ${}^{11}$B sites, we analyze the hyperfine coupling tensors and propose two constraints on the possible magnetic structure. The single ion anisotropy should play an important role in the determination of the contrasting ground states of Sm${}_3$BWO${}_9$ and Pr${}_3$BWO${}_9$.

arXiv comment7 pages, 5 figures

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Cited by in corpus (7)

• Magnetic phase diagram of the breathing-kagome antiferromagnet Nd${}_3$BWO${}_9$
• Excitation Spectrum and Spin Hamiltonian of the Frustrated Quantum Ising Magnet Pr${}_3$BWO${}_9$
• Antiferromagnetic ordering and critical behavior induced giant magnetocaloric effect in distorted kagome lattice Gd${}_3$BWO${}_9$
• Braided Ising spin-tube physics in a purported kagome magnet
• Magnetic properties and field-induced phenomena in the Jeff = 1/2 distorted kagome antiferromagnet
• Ising Supercriticality and Universal Magnetocalorics in Spiral Antiferromagnet Nd${}_3$BWO${}_9$
• Magnetic and thermodynamic studies on the distorted kagome magnet Pr${}_3$BWO${}_9$