skip to main content

SciTech ConnectSciTech Connect

Title: Fabrication and characterization of nanostructured Fe{sub 3}S{sub 4}, an isostructural compound of half-metallic Fe{sub 3}O{sub 4}

High-purity, well-crystallized spinel Fe{sub 3}S{sub 4} nanoplatelets were synthesized by the hydrothermal method, and the saturation magnetic moment of Fe{sub 3}S{sub 4} was measured at 1.83 μ{sub B}/f.u. The temperature-dependent resistivity of Fe{sub 3}S{sub 4} was metallic-like for T < 180 K: room-temperature resistivity was measured at 7.711 × 10{sup 3 }μΩ cm. The anomalous Hall conductivity of Fe{sub 3}S{sub 4} decreased with increasing longitudinal conductivity, in sharp contrast with the accepted theory of the anomalous Hall effect in a dirty-metal regime. Furthermore, negligible spin-dependent magnetoresistance was observed. Band structure calculations confirmed our experimental observations that Fe{sub 3}S{sub 4} is a metal and not a half metal as expected.
Authors:
 [1] ;  [2] ; ; ; ;  [1] ;  [3] ; ;  [4]
  1. Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955 (Saudi Arabia)
  2. (China)
  3. Advanced Nanofabrication, Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, Thuwal-239955 (Saudi Arabia)
  4. Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Institute of Advanced Materials Physics, Tianjin University, Tianjin 300072 (China)
Publication Date:
OSTI Identifier:
22412912
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRONIC STRUCTURE; FABRICATION; FERRITES; HALL EFFECT; HYDROTHERMAL SYNTHESIS; IRON OXIDES; IRON SULFIDES; MAGNETIC MOMENTS; MAGNETORESISTANCE; NANOSTRUCTURES; SPIN; SPINELS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K