Structural, magneto-optical properties and cation distribution of SrBi x La x Y x Fe 12−3x O 19 (0.0 ≤ x ≤ 0.33) hexaferrites
Source abstract
Abstract
Abstract SrBixLaxYxFe12−3xO19 (0.0 ≤ x ≤ 0.33) hexaferrites were produced via sol-gel auto combustion. XRD patterns show that all the samples are single-phase M-type strontium hexaferrite (SrM). The magnetic hysteresis (σ-H) loops revealed the ferromagnetic nature of nanoparticles (NPs). The coercive field decreases from 4740 Oe to 2720 Oe with increasing ion content. In particular, SrBixLaxYxFe12−3xO19 NPs with x = 0.0, 0.1, 0.2 have suitable magnetic characteristics (σs = 62.03–64.72 emu/g and Hc = 3105–4740 Oe) for magnetic recording. The intrinsic coercivity (Hci) above 15000 Oe reveals that all samples are magnetically hard materials. Tauc plots were used to specify the direct optical energy band gap (Eg) of NPs. The Eg values are between 1.76 eV and 1.85 eV. 57Fe Mossbauer spectroscopy data, the variation in line width, isomer shift, quadrupole splitting, relative area and hyperfine magnetic field values on Bi3+ La3+ and Y3+ substitutions have been determined.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Multiferroics and related materials · Magneto-Optical Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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