Understanding the Interplay between Magnetic and Anion Order in Diaspores
Diaspores crystallise forming chains of edge-sharing octahedral dimers that are interconnected at the corners, providing an opportunity for strong magnetic exchange anisotropy and competition between ferromagnetic and antiferromagnetic interactions. We have synthesised the currently unreported Ni(OH)F Diaspore, and observe a variation in the magnetic behaviour compared to the Co, Fe analogues. Ni(OH)F shows weak ferromagnetism (wFM), which may result from a change in the magnetic exchange interactions and hence magnetic structure allowing spin canting. However, both disorder and ordering of OH and F have been reported for various materials in the M(OH)F materials. The coupling of order parameters associated with structural distortions such as anion order with order parameters arising from the magnetic spin may further lead to the generation of additional ferromagnetic components. This will open the investigation as to why this magnetic behaviour is not yet seen in the Co or Fe analogues and further our understanding in the possibility of tuning magnetic properties through the distortion of the nuclear structure and non-magnetic atoms.
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The recommended format for citing this dataset in a research publication is in the following format:
Mark S Senn; Catriona Crawford; Thomas C. Hansen; HILEY Craig; RITTER Clemens; SIMPSON Struan; SINTED Putthachat and WALTON Richard. (2023). Understanding the Interplay between Magnetic and Anion Order in Diaspores. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-23-798
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