In-situ high-pressure x-ray diffraction study of zinc ferrite nanoparticles
- Instituto de Tecnologia y Ciencias de la Ingenieria "Ing. Hilario Fernandez Long" (UBA-CONICET), Buenos Aires (Argentina)
- Univ. of Nevada, Las Vegas, NV (United States)
- Facultad de Ingenieria (UBA), Buenos Aires (Argentina)
- Univ. de Valencia, Valencia (Spain)
We have studied the high-pressure structural behavior of zinc ferrite (ZnFe2O4) nanoparticles by powder X-ray diffraction measurements up to 47 GPa. We found that the cubic spinel structure of ZnFe2O4 remains up to 33 GPa and a phase transition is induced beyond this pressure. The high-pressure phase is indexed to an orthorhombic CaMn2O4-type structure. Upon decompression the low- and high-pressure phases coexist. The compressibility of both structures was also investigated. We have observed that the lattice parameters of the high-pressure phase behave anisotropically upon compression. Further, we predict possible phase transition around 55 GPa. For comparison, we also studied the compression behavior of magnetite (Fe3O4) nanoparticles by X-ray diffraction up to 23 GPa. Spinel-type ZnFe2O4 and Fe3O4 nanoparticles have a bulk modulus of 172 (20) GPa and 152 (9) GPa, respectively. Lastly, this indicates that in both cases the nanoparticles do not undergo a Hall-Petch strengthening.
- Research Organization:
- Univ. of Nevada, Las Vegas, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- NA0001982; NA0001974; FG02-99ER45775; AC02-06CH11357
- OSTI ID:
- 1332349
- Alternate ID(s):
- OSTI ID: 1357835
- Journal Information:
- Solid State Sciences, Vol. 56, Issue C; ISSN 1293-2558
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Pressure-induced structural and spin transitions of Fe3S4
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journal | April 2017 |
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