title: Size-controlled synthesis of bifunctional magnetic and ultraviolet optical rock-salt MnS nanocube superlattices.
abstract: Wide-band-gap rock-salt (RS) MnS nanocubes were synthesized by the one-pot solvent thermal approach. The edge length of the nanocubes can be easily controlled by prolonging the reaction time (or aging time). We systematically explored the formation of RS-MnS nanocubes and found that the present synthetic method is virtually a combination of oriented aggregation and intraparticle ripening processes. Furthermore, these RS-MnS nanocubes could spontaneously assemble into ordered superlattices via the natural cooling process. The optical and magnetic properties were investigated using measured by UV-vis absorption, photoluminescence spectra, and a magnetometer. The obtained RS-MnS nanocubes exhibit good ultraviolet optical properties depending on the size of the samples. The magnetic measurements suggest that RS-MnS nanocubes consist of an antiferromagnetic core and a ferromagnetic shell below the blocking temperatures. Furthermore, the hysteresis measurements indicate these RS-MnS nanocubes have large coercive fields (e.g., 1265 Oe for 40 nm nanocubes), which is attributed to the size and self-assembly of the samples.
authors.affiliation: State key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China.
authors.forename: Xinyi
authors.initials: X
authors.lastname: Yang
authors.forename: Yingnan
authors.initials: Y
authors.lastname: Wang
authors.forename: Yongming
authors.initials: Y
authors.lastname: Sui
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Huang
authors.forename: Tian
authors.initials: T
authors.lastname: Cui
authors.forename: Chunzhong
authors.initials: C
authors.lastname: Wang
authors.forename: Bingbing
authors.initials: B
authors.lastname: Liu
authors.forename: Guangtian
authors.initials: G
authors.lastname: Zou
authors.forename: Bo
authors.initials: B
authors.lastname: Zou