Partitioning the Two-Leg Spin Ladder in Ba2Cu1 - x Zn x TeO6 From Magnetic Order through Spin-Freezing to Paramagnetism

Partitioning the Two-Leg Spin Ladder in Ba2Cu1 - x Zn x TeO6 : From Magnetic Order through Spin-Freezing to Paramagnetism

© 2023 The Authors. Published by American Chemical Society.

Bibliographische Detailangaben
Veröffentlicht in:Chemistry of materials : a publication of the American Chemical Society. - 1998. - 35(2023), 7 vom: 11. Apr., Seite 2752-2761
1. Verfasser: Pughe, Charlotte (VerfasserIn)
Weitere Verfasser: Mustonen, Otto H J, Gibbs, Alexandra S, Lee, Stephen, Stewart, Rhea, Gade, Ben, Wang, Chennan, Luetkens, Hubertus, Foster, Anna, Coomer, Fiona C, Takagi, Hidenori, Cussen, Edmund J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Chemistry of materials : a publication of the American Chemical Society
Schlagworte:Journal Article
Beschreibung
Zusammenfassung:© 2023 The Authors. Published by American Chemical Society.
Ba2CuTeO6 has attracted significant attention as it contains a two-leg spin ladder of Cu2+ cations that lies in close proximity to a quantum critical point. Recently, Ba2CuTeO6 has been shown to accommodate chemical substitutions, which can significantly tune its magnetic behavior. Here, we investigate the effects of substitution for non-magnetic Zn2+ impurities at the Cu2+ site, partitioning the spin ladders. Results from bulk thermodynamic and local muon magnetic characterization on the Ba2Cu1 - x Zn x TeO6 solid solution (0 ≤ x ≤ 0.6) indicate that Zn2+ partitions the Cu2+ spin ladders into clusters and can be considered using the percolation theory. As the average cluster size decreases with increasing Zn2+ substitution, there is an evolving transition from long-range order to spin-freezing as the critical cluster size is reached between x = 0.1 to x = 0.2, beyond which the behavior became paramagnetic. This demonstrates well-controlled tuning of the magnetic disorder, which is highly topical across a range of low-dimensional Cu2+-based materials. However, in many of these cases, the chemical disorder is also relatively strong in contrast to Ba2CuTeO6 and its derivatives. Therefore, Ba2Cu1 - x Zn x TeO6 provides an ideal model system for isolating the effect of defects and segmentation in low-dimensional quantum magnets
Beschreibung:Date Revised 18.04.2023
published: Electronic-eCollection
Citation Status PubMed-not-MEDLINE
ISSN:0897-4756
DOI:10.1021/acs.chemmater.2c02939