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

Rare earth based cobalt-ruthenium double perovskites A$_2$CoRuO$_6$ (A = La,Pr, Nd and Sm) were synthesized and investigated for their structural andmagnetic properties. All the compounds crystallize in the monoclinic $P2_1/n$structure with the indication of antisite disorder between Co and Ru sites.While, La compound is already reported to have an antiferromagnetic state below27 K, the Pr, Nd and Sm systems are found to be ferrimagnetic below $T_c$ = 46,55 and 78 K respectively. Field dependent magnetization data indicate prominenthysteresis loop below $T_c$ in the samples containing magnetic rare-earth ions,however magnetization does not saturate even at the highest applied fields. Ourstructural analysis indicates strong distortion in the Co-O-Ru bond angle, asLa$^{3+}$ is replaced by smaller rare-earth ions such as Pr$^{3+}$, Nd$^{3+}$and Sm$^{3+}$. The observed ferrimagnetism is possibly associated with theenhanced antiferromagnetic superexchange interaction in the Co-O-Ru pathway dueto bond bending. The Pr, Nd and Sm samples also show small magnetocaloriceffect with Nd sample showing highest value of magnitude $\sim$ 3Jkg$^{-1}$K$^{-1}$ at 50 kOe. The change in entropy below 20 K is found to bepositive in the Sm sample as compared to the negative value in the Ndcounterpart.

Octahedral tilting and emergence of ferrimagnetism in cobalt-ruthenium based double perovskites