2020/12/23 by Mitchell M. Bordelon, Joshua D. Bocarsly, Lorenzo Posthuma +3 · 18 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Chemistry #Condensed matter physics #Crystal structure #Crystallography #Inelastic neutron scattering #Magnetic and transport properties of perovskites and related materials #Multiplet #Neutron diffraction #Neutron scattering #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scattering #Tetragonal crystal system #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.103.024430
published in Physical review. B./Physical review. B 103(2) (American Physical Society) · 7 pages, 6 figures
arxiv created 2020/12/23 · openalex created_date 2021/01/05 · openalex publication_date 2021/01/19 · arxiv updated 2021/01/26 · openalex updated_date 2026/08/05
We investigate the crystal structure, magnetic properties, and crystalline electric field of tetragonal, I41/amd, NaCeO2. In this compound, Ce3+ ions form a tetragonally elongated diamond lattice coupled by antiferromagnetic interactions (\mathrm\ensuremathΘCW=\ensuremath-7.69 K) that magnetically order below TN=3.18 K. The Ce3+\phantom\rule4pt0exJ=5/2 crystalline electric field-split multiplet is studied via inelastic neutron scattering to parametrize a Jeff=1/2 ground state doublet composed of states possessing mixed |mz\ensuremath⟩ character. Neutron powder diffraction data reveal the onset of A-type antiferromagnetism with \ensuremathμ=0.57(2)\ensuremathμB moments aligned along the c axis. The magnetic structure is consistent with the expectations of a frustrated Heisenberg J1\ensuremath-J2 model on the elongated diamond lattice with effective exchange values J1>4J2 and J1>0.