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Title: In-situ high-pressure x-ray diffraction study of zinc ferrite nanoparticles

Journal Article · · Solid State Sciences
 [1];  [2]; ORCiD logo [1];  [1];  [3];  [4]
  1. Instituto de Tecnologia y Ciencias de la Ingenieria "Ing. Hilario Fernandez Long" (UBA-CONICET), Buenos Aires (Argentina)
  2. Univ. of Nevada, Las Vegas, NV (United States)
  3. Facultad de Ingenieria (UBA), Buenos Aires (Argentina)
  4. 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
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (1)

Pressure-induced structural and spin transitions of Fe3S4 journal April 2017