Figure 5.
X-ray diffraction (XRD) patterns of thermally treated samples NV4-TT, NV5-TT, NV6-TT, and NV7-TT, compared to the XRD patterns of hematite (red) and magnetite (blue) from the ICDD PDF 4+ 2019 data base.
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.