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

A comparative study on the manifestation of rare earth ions substitution induced alteration in structure, magnetic and optical properties of BiFeO 3  nanoparticles was done. Sol-gel technique was employed to synthesize Bi 1 −x   R    x   FeO 3  ( x  = 0.05 and 0.10;  R : Ce 3+ , Sm 3+  and Dy 3+ ) nanoparticles. X-ray diffraction patterns and Raman spectra analysis confirmed substitution driven structural phase transformation from distorted rhombohedral structure to orthorhombic structure for  x  = 0.10 samples. The enhanced magnetic properties with weak ferromagnetic behaviour were observed with increasing concentration of rare earth ions in BiFeO 3  nanoparticles. The improved magnetic characteristics are attributed to many factors such as the uncompensated surface spins in nanoparticles, breaking of spin cycloid with  R  3+  ions substitution and super exchange interaction between  R  3+  and Fe 3+  ions. The maximum magnetization values of 1.77 emu g −1 , 1.87 emu g −1  and 5.5 emu g −1  were observed for  x  = 0.10 samples with Ce 3+ , Sm 3+  and Dy 3+  substitution, respectively. The magnetization increased with increasing difference in ionic radii of host Bi 3+  (1.17 Å) ion and dopant Ce 3+  (1.14 Å), Sm 3+  (1.08 Å) and Dy 3+  (1.03 Å) ions. UV–Visible diffuse reflectance spectra showed a sharp absorption in visible region and energy band gap values variation in the range 2.2 eV–2.33 eV.

international journal of materials research

A comparative study on structural, magnetic and optical properties of rare earth ions substituted Bi 1− x   R    x   FeO 3  ( R : Ce 3+ , Sm 3+  and Dy 3+ ) nanoparticles