Synthesis of greigite (Fe3S4) by an electrochemical method

Low-temperature magnetic properties of greigite (Fe3S4)

[1] We provide comprehensive low-temperature magnetic results for greigite (Fe3S4) across the spectrum from superparamagnetic (SP) to multidomain (MD) behavior. It is well known that greigite has no lowtemperature magnetic transitions, but we also document that it has strong domain-state dependence of magnetic properties at low temperatures. Blocking of SP grains and increasing thermal stabilit...

Structure, Morphology and Growth of Biogenic Greigite (Fe3S4)

Magnetic structure of greigite (Fe3S4) probed by neutron powder diffraction and polarized neutron diffraction

[1] We have investigated greigite (Fe3S4) using a combination of neutron powder diffraction and polarized neutron diffraction to give the first unambiguous assignment of its magnetic structure. Our results confirm that greigite has a collinear ferrimagnetic structure with antiferromagnetic coupling between the tetrahedral (A) and octahedral (B) sites. Our analysis also indicates that greigite d...

Synthesis of magnetic graphene-Fe3O4 nanocomposites by electrochemical exfoliation method

Superparamagnetic few-layer graphene nanocomposites (FLG- NCs) can be used for many technological applications, such as solar cells, batteries, touch panels and supercapacitors. In this work, we applied electrochemical exfoliation method as a simple, one step and economical technique to fabricate FLG- NCs. The fabricated Superparamagnetic FLG- NCs were characterized by X-ray diffraction (XRD), ...

Gyromagnetic remanence acquired by greigite (Fe3S4) during static threeaxis alternating field demagnetization

S. Hu,1,2 E. Appel,1 V. Hoffmann,1 W. W. Schmahl3 and S. Wang2 1 Institut für Geologie und Paläontologie, Universität T übingen, Sigwartstrasse 10, 72076 T übingen, Germany. E-mail: [email protected] 2Nanjing Institute of Geography and L iminology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, P.R. China 3 Institut für Mineralogie, Petrologie und Geochemie, Unive...