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Disordered and frustrated magnetization of different surface coated (Cr2O3, Co3O4, ZrO2, and SiO2) MnFe2O4 nanoparticles have been studied using SQUID-magnetometry. Magnetic measurements, such as ZFC/FC and ac-susceptibility evidence surface spin-glass behavior. ZFC/FC curves were also compared with numerical simulation to get information about effective anisotropy constants. Frequency dependent ac susceptibility results were analyzed by using Arrhenius, Vogel Fulcher and dynamic scaling laws to further confirm the spin-glass behavior. It is observed that the strength of surface spins disorder and frustration strongly depends upon the type of the coating material. All these analyses signify that disordered and frustrated surface magnetization in MnFe2O4 nanoparticles greatly depend on the type of the surface coating materials and are useful for controlling the nanoparticle’s magnetism for different practical applications.
|Journal||Solid State Phenomena|
|Publication status||Published - 2019|
|Event||21st International Conference on Solid Compounds of Transition Elements: SCTE 2018 - Wien, Austria|
Duration: 25 Mar 2018 → 29 Mar 2018
Fields of Expertise
- Advanced Materials Science
FingerprintDive into the research topics of 'Disordered and Frustrated Magnetization in Coated MnFe2O4 Nanoparticles Prepared by Microwave Plasma Synthesis'. Together they form a unique fingerprint.
- 1 Active
Energy Materials & Nanomaterials
Brossmann, U., Steyskal, E., Würschum, R. & Klinser, G.
1/01/00 → …
Project: Research area