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/

Zendy Plus

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

Zendy Tools

Zendy Open

We investigate the dynamics of magnetization in the phase separated (PS)state after introducing the quenched disorder at the Mn-site of a manganitearound half doping. The compound,Pr$_{0.5}$Sr$_{0.5}$Mn$_{0.925}$Ga$_{0.075}$O$_{3}$, exhibits PS with thecoexistence of ferromagnetic (FM) and antiferromagnetic (AFM) clusters wherethe size of the FM clusters is substantially reduced due to the disorderintroduced by nonmagnetic Ga substitution. At low temperature, the systemdevelops a new magnetic anomaly, which is marked by a peak in the zero fieldcooled magnetization. Detailed study of linear as well as nonlinear acsusceptibilities coupled with dc magnetization indicates that this peak arisesdue to the thermal blocking of nanometer size FM clusters demonstratingsuperparamagnetic behavior. The system, however, exhibits slow magneticrelaxation, aging effect, memory effect in both field cooled and zero fieldcooled magnetization below the blocking temperature. These imply the presenceof collective behavior induced by the interaction between the clusters.Moreover, the magnetic relaxation measured with positive and negativetemperature excursions exhibits asymmetric response suggesting that thedynamics in this phase separated system is accounted by the hierarchical modelrather than the droplet model which are commonly used to describe the similarcollective dynamics in glassy system.

The dynamics of magnetization in phase separated manganite around half doping: a case study for Pr$_{0.5}$Sr$_{0.5}$Mn$_{0.925}$Ga$_{0.075}$O$_{3}$