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Structural and magnetic studies of the frustrated S = 1 kagome magnet NH 4 Ni 2 Mo 2 O 10 H 3 .
- Source :
-
Journal of physics. Condensed matter : an Institute of Physics journal [J Phys Condens Matter] 2024 Mar 07; Vol. 36 (22). Date of Electronic Publication: 2024 Mar 07. - Publication Year :
- 2024
-
Abstract
- The strong geometric frustration of the kagome antiferromagnets (KAFMs) can destabilise conventional magnetic order and lead to exotic electronic states, such as the quantum spin-liquid state observed in someS=12KAFM materials. However, the ground state of S = 1 KAFM systems are less well understood. Spin nematic phases and valence bond solid ground states have been predicted to form but a paucity of experimental realisations restricts understanding. Here, the S = 1 KAFM NH <subscript>4</subscript> Ni <subscript>2</subscript> Mo <subscript>2</subscript> O <subscript>10</subscript> H <subscript>3</subscript> is presented, which has the 3-fold symmetry of the kagome lattice but significant site depletion, with∼64%site occupancy. Frustration and a competition between exchange interactions are evidenced through the suppression of order below the Weiss temperature|θW|and observation of ferromagnetic and antiferromagnetic characteristics in the magnetisation data. A semi spin glass ground state is predicted based on the ac-field frequency dependence of the magnetic transition and ferromagnetic signal.<br /> (Creative Commons Attribution license.)
Details
- Language :
- English
- ISSN :
- 1361-648X
- Volume :
- 36
- Issue :
- 22
- Database :
- MEDLINE
- Journal :
- Journal of physics. Condensed matter : an Institute of Physics journal
- Publication Type :
- Academic Journal
- Accession number :
- 38373351
- Full Text :
- https://doi.org/10.1088/1361-648X/ad2aab