Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba3Cu3In4O12 and Ba3Cu3Sc4O12

Abstract

The magnetic properties of polycrystalline samples of Ba3Cu3In4O12 (In-334) and Ba3Cu3Sc4O12 (Sc-334) are reported. Both 334 phases have a structure derived from perovskite, with CuO4 squares interconnected to form half-twist ladders along the c-axis. The Cu-O-Cu angles, ~ 90o, and the positive Weiss temperatures indicate the presence of significant ferromagnetic (FM) interactions along the Cu ladders. At low temperatures, T < 20 K, sharp transitions in the magnetic susceptibility and heat capacity measurements indicate three-dimensional (3D) antiferromagnetic (AFM) ordering at TN. TN is suppressed on application of a field and a complex magnetic phase diagram with three distinct magnetic regimes below the upper critical field can be inferred from our measurements. The magnetic interactions are discussed in relation to a modified spin-1/2 FM-AFM model and the 334 half-twist ladder is compared to other 2-rung ladder spin-1/2 systems.

arXiv comment20 pages, 7 figures

References in corpus (15)

• Surprises on the Way from 1D to 2D Quantum Magnets: the Novel Ladder Materials
• Vector chiral and multipolar orders in the spin-1/2 frustrated ferromagnetic chain in magnetic field
• Direct Measurement of the Spin Hamiltonian and Observation of Condensation of Magnons in the 2D Frustrated Quantum Magnet Cs2CuCl4
• Confirmation of a one-dimensional spin-1/2 Heisenberg system with ferromagnetic first-nearest-neighbor and antiferromagnetic second-nearest-neighbor interactions in Rb${}_2$Cu${}_2$Mo${}_3$O${}_{12}$
• Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates
• Zigzag spin chains with antiferromagnetic-ferromagnetic interactions: Transfer-matrix renormalization group study
• Phase diagram of an anisotropic frustrated ferromagnetic spin-1/2 chain in a magnetic field: a density matrix renormalization group study
• Highly Dispersive Spin Excitations in the Chain Cuprate Li2CuO2
• Thermodynamics of a one-dimensional frustrated spin-1/2 Heisenberg ferromagnet
• Metamagnetism and soliton excitations in the modulated ferromagnetic Ising chain CoV2O6
• Electronic structure and exchange interactions of the ladder vanadates CaV2O5 and MgV2O5
• The J1-J2 Heisenberg model at and close to its z=4 quantum critical point
• An overview on the phase diagram of the frustrated two-leg ladder model
• Phase diagram and hidden order for generalized spin ladders
• Exact ground states for a class of one-dimensional frustrated quantum spin models

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