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<identifier identifierType='DOI'>10.1103/PhysRevB.106.174421</identifier>
<creators>
<creator>
<creatorName>Prodan, L.I.</creatorName>
<affiliation>Universitatea Augsburg, Germania</affiliation>
</creator>
<creator>
<creatorName>Filippova, I.G.</creatorName>
<affiliation>Institutul de Fizică Aplicată, Moldova, Republica</affiliation>
</creator>
<creator>
<creatorName>Zubtsovskii, A.</creatorName>
<affiliation>Universitatea Augsburg, Germania</affiliation>
</creator>
<creator>
<creatorName>Şova, S.G.</creatorName>
<affiliation>Institutul de Chimie Macromoleculara „Petru Poni“, Iaşi, România</affiliation>
</creator>
<creator>
<creatorName>Widmann, S.</creatorName>
<affiliation>Universitatea Augsburg, Germania</affiliation>
</creator>
<creator>
<creatorName>Tsirlin, A.</creatorName>
<affiliation>Universitatea Augsburg, Germania</affiliation>
</creator>
<creator>
<creatorName>Kezsmarki, I.</creatorName>
<affiliation>Universitatea Augsburg, Germania</affiliation>
</creator>
<creator>
<creatorName>Ţurcan, V.V.</creatorName>
<affiliation>Universitatea Augsburg, Germania</affiliation>
</creator>
</creators>
<titles>
<title xml:lang='en'>Dilution of a polar magnet: Structure and magnetism of Zn-substituted Co2Mo3 O8</title>
</titles>
<publisher>Instrumentul Bibliometric National</publisher>
<publicationYear>2022</publicationYear>
<relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>2469-9950</relatedIdentifier>
<subjects>
<subject>Antiferromagnetism</subject>
<subject>Binary alloys</subject>
<subject>crystal structure</subject>
<subject>entropy</subject>
<subject>Magnetic couplings</subject>
<subject>Magnets</subject>
<subject>single crystals</subject>
<subject>specific heat</subject>
<subject>Zinc</subject>
</subjects>
<dates>
<date dateType='Issued'>2022-11-01</date>
</dates>
<resourceType resourceTypeGeneral='Text'>Journal article</resourceType>
<descriptions>
<description xml:lang='en' descriptionType='Abstract'><p>We report crystal structure, magnetization, and specific heat measurements on single crystals of the hexagonal polar magnet Co2-xZnxMo3O8 magnetically diluted by replacing Co by Zn. In contrast to the transformation from the antiferromagnetic to a ferrimagnetic state observed in the isostructural Fe2Mo3O8 upon small Zn doping, a robust antiferromagnetic behavior is preserved in Zn-doped Co2Mo3O8 up to x=0.55. The N&eacute;el temperature decreases from TN=40 K at x=0 to 23 K at x=0.55, thus extrapolating to x=1.27 (36% filling) as the percolation threshold typical for a three-dimensional, highly coordinated network. This indicates strong magnetic couplings beyond the honeycomb planes in Co2Mo3O8. A sharp peak in the specific heat and a clear cusp in the susceptibility associated with the onset of magnetic order is observed up to x=0.55, whereas at x=0.66 these features are broadened due to increased disorder. Interestingly, the in-plane lattice parameter, the Curie-Weiss temperature, and the magnetic entropy vary with x in a concerted but nonmonotonic manner. These observations can be traced back to the observed site-selective Zn substitution. We found that in the low-doping regime (x&lt;0.2) Zn2+ ions primarily occupy the octahedrally coordinated sites, although they have a clear preference for occupying the tetrahedrally coordinated sites at higher doping levels. Due to the multiple interlayer exchange paths, dependent on the coordination of the Co2+ ions, this behavior is reflected in the nonmonotonic variation of the Curie-Weiss temperature and magnetic entropy with substitution.</p></description>
</descriptions>
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