Ba₄Ni₃F₁₄·H₂O: a ferrimagnetic compound with a staircase kagomé lattice

Abstract

A new crystalline fluoride Ba4Ni3F14·H2O was found to exhibit a rare S = 1 staircase kagomé lattice built by Ni2+ ions. Magnetic measurements indicate a ferrimagnetic transition at ~28 K,...

Analogous Chain Selenite Chlorides Ba2M(SeO3)2Cl2 (M = Cu2+, Ni2+, Co2+, Mn2+) and Pb2Cu(SeO3)2Cl2 with Tunable Spin S: Syntheses and Characterizations

“…The χT value at room temperature is 1.48 emu•K•mol −1 , which is a little larger than the theoretical spin-only value due to the orbital contribution. 78 It then decreases upon cooling, further confirming the dominant AFM interactions (Figures 4 and S15b). To estimate the intrachain interaction J through Ni− O−Se−O−Ni pathway, the magnetic susceptibility of 2 was fitted by an S = 1 theoretical equation with t = |J|/k B T. 34 The best fit to the experimental data between 8 and 300 K gives J/ k B = −15.22(3) K with g = 2.44.…”

“…The negative Weiss temperature indicates that the dominant magnetic exchange interaction in 2 is AFM. The χ T value at room temperature is 1.48 emu·K·mol –1 , which is a little larger than the theoretical spin-only value due to the orbital contribution . It then decreases upon cooling, further confirming the dominant AFM interactions (Figures and S15b).…”