Peculiarities of the local structure in new medium- and high-entropy, low-symmetry tungstates

Preparation and Properties of a High-Entropy Wolframite-Type Antiferromagnet, (Mn0.2Co0.2Ni0.2Cu0.2Cd0.2)WO4

“…(ii) We avoided Fe 2+ , which is prone to oxidation, as is evident from Figure S1, where the point of the six-component material shows an abnormally reduced unit cell volume (as well as one of points corresponding to FeWO 4 ); indeed, X-ray photoelectron spectroscopy (XPS) data showed the presence of Fe 3+ and Cu + in the six-component material; on the other hand, the two Fe-free five-component materials (that from ref and ours) have unit cell volumes in good agreement with the general trend (points 1 and 3 in Figure S1).…”

“…Recent years have shown that high-entropy (or compositionally complex) solid solutions may have interesting properties that often cannot be predicted from the properties of their “low-entropy” constituents. Because no magnetic studies of wolframites containing more than two divalent cations were known from literature, we started the preparation and study of a five-component wolframite-type magnet, (Mn 1/5 Co 1/5 Ni 1/5 Cu 1/5 Cd 1/5 )­WO 4 (TWO 4 for short), being sure that this will be a pioneering work [a recent publication on (Mn 1/5 Co 1/5 Ni 1/5 Cu 1/5 Zn 1/5 )­WO 4 did not report magnetic properties]. However, in May 2023, a paper appeared on (Mn 1/6 Fe 1/6 Co 1/6 Ni 1/6 Cu 1/6 Zn 1/6 )­WO 4 with T N of 30 K .…”

Structure of Polaronic Centers in Proton-Intercalated AWO4 Scheelite-Type Tungstates

“…The lattice parameters a, b, and c were obtained from the XRD data of CaWO 4 [34], SrWO 4 [34], and BaWO 4 [34]. Throughout the RMC/EA simulation process, the shape and size of the supercells remain unchanged [35,36].…”

Examining the Effect of Cu and Mn Dopants on the Structure of Zinc Blende ZnS Nanopowders

“…This makes it ideally suitable to study the local environment around impurities. Moreover, the simultaneous analysis of the extended X-ray absorption fine structure (EXAFS) spectra obtained at the absorption edges of elements composing the multicomponent material makes it possible to reconstruct their local environment within the framework of a single structural model using the reverse Monte Carlo (RMC) method [19,20]. As a result, accurate information on interatomic distances, bond strengths, and local structure distortions can be obtained [21].…”