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

We report the existence of ferromagnetic correlations (FMC) in the paramagnetic (PM) matrix of cubic La 1− x  Sr  x  MnO 3− δ   ( x  = 0.80, 0.85) well above its coupled structural, magnetic, and electronic phase transitions. The dc‐magnetization versus temperature [ M ( T )] behavior under different magnetic fields (from 100 Oe to 70 kOe) shows the presence of short‐range magnetic correlations up to ( T  FMC  ∼) 365 K, far above the antiferromagnetic ordering temperatures ( T  N  =) 260 and 238 K for  x  = 0.80 and 0.85, respectively. More importantly the observed short‐range FMC survive even up to 70 kOe, which indicates their robust nature. The temperature region between  T  N  and  T  FMC  is dominated by the presence of correlated ferromagnetic (FM) entities within the PM matrix and stabilized due to A‐site chemical disorder. Our results further illustrate that for the studied compositions, the oxygen off‐stoichiometry does not have any significant effect on the nature and strength of these FM entities; however, FM interactions increase in the oxygen‐deficient samples. These compositions are the unique examples, where the presence of FMC is observed in an undistorted basic cubic perovskite lattice well above  T  N  and therefore are novel to understand the physics behind the colossal magnetoresistance effect.

Evidence of ferromagnetic short‐range correlations in cubic La 1− x Sr x MnO 3− δ ( x = 0.80, 0.85) above antiferromagnetic ordering