Abstract
In this work, we describe the magnetization of nanosized SFMO particles with a narrow size distribution around ca. 70 nm fabricated by the citrate-gel technique. The single-phase composition and superstructure ordering degree were proved by X-ray diffraction, the superparamagnetic behavior by magnetization measurements using zero-field cooled and field-cooled protocols, as well as by electron magnetic resonance. Different contributions to the magnetic anisotropy constant and the temperature dependence of the magnetocrystalline anisotropy are discussed.
Highlights
Strontium ferromolybdate (Sr2 FeMoO6-δ, SFMO) is a widely studied ferrimagnetic double perovskite
An inhomogeneous magnetic state was obtained in SFMO nanoparticles fabricated by solid-state reactions from partially reduced SrFeO3−x and SrMoO4 precursors by studying the temperature dependences of the magnetization measured in the field-cooling (FC) and zero-field-cooling (ZFC) modes and small-angle neutron scattering [3]
Nanosized SFMO particles with a narrow size distribution around ca. 70 nm were fabricated by the citrate-gel technique
Summary
Strontium ferromolybdate (Sr2 FeMoO6-δ , SFMO) is a widely studied ferrimagnetic double perovskite. An inhomogeneous magnetic state was obtained in SFMO nanoparticles fabricated by solid-state reactions from partially reduced SrFeO3−x and SrMoO4 precursors by studying the temperature dependences of the magnetization measured in the field-cooling (FC) and zero-field-cooling (ZFC) modes and small-angle neutron scattering [3]. This state was attributed to the frustration of the exchange bonds and simultaneous occurrence of various magnetic states: antiferromagnetic, ferrimagnetic, and superparamagnetic when the spin inversion does not change the energy of the system in a wide range of temperatures
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