Abstract
A novel erbium-based compound as well asEr2O3 nanosheets have been synthesized through a simple hydrothermal route.The nanosheets are of 200 nm width and 10–15 nm thickness. It issuggested that this erbium-based compound has a possible formula ofEr2O5H4 with a primitive tetragonal structure (cell parameters:a = 8.465(1) andc = 15.117(2) Å). Face-centered cubic and body-centered cubic structuredEr2O3 nanosheets were obtained after calcination of this compound at623 and 973 K, respectively, both having a paramagnetic behavior.Er2O5H4 andEr2O3 nanosheets have similar up-conversion properties with strong blue emission, which is rarelyreported in the literature. The existence of absorbed surface contaminations in nanosheetsmight be the origin for the blue emission enhancement.
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