Ba3V2S4O3: A Mott Insulating Frustrated Quasi‐One‐Dimensional S=1 Magnet. Issue 21 (15th April 2015)

• Record Type: Journal Article
• Authors: Hopkins, Emily J.; Prots, Yurii; Burkhardt, Ulrich; Watier, Yves; Hu, Zhiwei; Kuo, Chang‐Yang; Chiang, Jen‐Che; Pi, Tun‐Wen; Tanaka, Arata; Tjeng, Liu Hao; Valldor, Martin
• Is Part Of: Chemistry. Volume 21:Issue 21(2015)
• Page Start: 7938
• Page End: 7943
• Publication Date: 2015-04-15
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201406511
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Through a solid‐state reaction, a practically phase pure powder of Ba₃V₂S₄O₃ was obtained. The crystal structure was confirmed by X‐ray single‐crystal and synchrotron X‐ray powder diffraction (<italic>P</italic>6₃, <italic>a</italic>=10.1620(2), <italic>c</italic>=5.93212(1) Å). X‐ray absorption spectroscopy, in conjunction with multiplet calculations, clearly describes the vanadium in charge‐disproportionated V^IIIS₆ and V^VSO₃ coordinations. The compound is shown to be a strongly correlated Mott insulator, which contradicts previous predictions. Magnetic and specific heat measurements suggest dominant antiferromagnetic spin interactions concomitant with a weak residual ferromagnetic component, and that intrinsic geometric frustration prevents long‐range order from evolving.</p> </abstract>