English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Cobalt (Co) substituted brownmillerite KBiFe 2 O 5  (KBiFe 1.9 Co 0.1 O 5 : KBFCO) is synthesized by conventional solid-state reaction route. Rietveld refinement of X-ray diffraction data confirms the pure phase of KBFCO and crystallizes in monoclinic structure with  P 2/ c  space group. Surface morphology reveals that the grains are randomly distributed, and the average grain size varies in the range of 1–4 μm. The energy dispersive X-ray spectroscopy confirms that the chemical constituents of KBFCO are very close to the molar (1:1:2) ratio. The temperature (10–300 K) and frequency (500 Hz–1 MHz) dependent dielectric permittivity value decreases approximately 50% in the presence of the magnetic field (1.3 T). It confirms the signature of the magnetodielectric ( MD ) effect in the KBFCO sample. The magnetic field (±1.3 T) variation  MD  loop resembles the inverse-butterfly type behavior for the system. Both  MD  hysteresis and strength decrease with a decrease in temperature. A noticeable suppression in the dielectric relaxation is obtained by applying a 1.3 T magnetic field in the temperature range of 250 K–300 K. The measured  MD  effect is observed at a high frequency (30 kHz), suggesting the intrinsic effect is dominated in the probing temperature range. Observation of similar trends in magnetic field-dependent  MD  and magnetic loss ( ML ) loop rules out the existence of magnetoresistance origin  MD  effect. These results confirm that KBFCO has an excellent  MD  response even for a small applied field and holds great interest for future device applications.

Temperature and magnetic field controlled dielectric relaxation and magnetodielectric response in KBiFe 1.9 Co 0.1 O 5 polycrystalline