Figure 4.
1H MAS NMR spectra in the α- (a), β- (b), and γ-forms (c) of HCa2Nb3O10·yH2O with the temperature decreasing.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.