Details

Autor(en) / Beteiligte

• Ashtar, M
• Marwat, M A
• Gao, Y X
• Zhang, Z T
• L Pi
• Yuan, S L
• Tian, Z M

Titel

REZnAl11O19 (RE = Pr, Nd, Sm–Tb): a new family of ideal 2D triangular lattice frustrated magnets

Ist Teil von

• Journal of materials chemistry. C, Materials for optical and electronic devices, 2019, Vol.7 (32), p.10073-10081

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report the synthesis, structure and magnetic properties of a new family of rare-earth (RE) based magnetoplumbite-type REZnAl11O19 (RE = Pr–Tb) compounds with space-group P63/mmc. The structural analysis reveals that magnetic RE ions form layers of ideal 2D triangular-lattices in the ab-plane well separated by several nonmagnetic polyhedra layers along the c-axis. The magnetic susceptibilities reveal that the compounds display dominant antiferromagnetic (AFM) exchange interactions and there is no magnetic transition down to 2 K. As a representative, PrZnAl11O19 exhibits large magnetic frustration with frustration index f = |θCW/TN| > 23 and absence of magnetic order down to 0.43 K, serving as a promising quantum spin liquid candidate. The magnetizations combined with electron spin resonances indicate the distinct anisotropic magnetic behaviors for compounds with different RE ions. These series of compounds provide a modeling system for exploring the novel magnetic phases of RE ions on ideal 2D triangular lattices.