Antiferromagnetic fluoride nanocrystals

Recently, researchers from Peking University, Shenzhen University and National Institute for Materials Science (NIMS) report that the altered passivation of specified facets can direct the synthesis of fluoride nanocrystals into dimension-controlled products in a colloidal approach. An anomalous hysteretic behavior together with thermal dependent exchange anisotropy and high field irreversibility are detected, which are ascribed to the coexistence of long-range antiferromagnetic order and surface spin-glass like freezing.