Magnetic Phase Transition in Spark-Produced Ternary LaFeSi Nanoalloys

Journal article (2018)

Authors

J. Feng ChemE/Materials for Energy Conversion and Storage - , Universiteit Leiden

R. Geutjens ChemE/Materials for Energy Conversion and Storage -

H.W. Zandbergen QN/Zandbergen Lab

E.H. Brück RST/Fundamental Aspects of Materials and Energy -

A. Schmidt-Ott ChemE/Materials for Energy Conversion and Storage - , The Cyprus Institute

V.T. Nguyên RST/Fundamental Aspects of Materials and Energy -

Junjie Li International Iberian Nanotechnology Laboratory

Xiaoai Guo Karlsruhe Institut für Technologie

Albert Kéri University of Szeged

S. Basak RST/Fundamental Aspects of Materials and Energy -

Gábor Galbács University of Szeged

G. Biskos The Cyprus Institute, Atmospheric Remote Sensing -

Hermann Nirschl Karlsruhe Institut für Technologie

Research Group

RST/Fundamental Aspects of Materials and Energy () (TU Delft)

Magnetocaloric effect Spark ablation Curie temperature Rare earths Hydrogen uptake

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Published Date

21-02-2018

Language

English

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Fundamental Aspects of Materials and Energy

Abstract

Using the magnetocaloric effect in nanoparticles holds great potential for efficient refrigeration and energy conversion. The most promising candidate materials for tailoring the Curie temperature to room temperature are rare-earth-based magnetic nanoalloys. However, only few high-nuclearity lanthanide/transition-metal nanoalloys have been produced so far. Here we report, for the first time, the observation of magnetic response in spark-produced LaFeSi nanoalloys. The results suggest that these nanoalloys can be used to exploit the magnetocaloric effect near room temperature; such a finding can lead to the creation of unique multicomponent materials for energy conversion, thus helping toward the realization of a sustainable energy economy.

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