Influence of intrinsic spin ordering in LaSrCoFeO and BaSrCoFeO towards electrocatalysis of oxygen redox reaction in solid oxide cell.

The redox reaction of oxygen (OER & ORR) forms the rate determining step of important processes like cellular respiration and water splitting. Being a spin relaxed process governed by quantum spin exchange interaction, QSEI (the ground triplet state in O is associated with singlet oxygen in HO/OH), its kinetics is sluggish and requires inclusion of selective catalyst. Functionality and sustainability of solid oxide cell involving fuel cell (FC) and electrolyzer cell (EC) are also controlled by ORR (oxygen redox reaction) and OER (oxygen evolution reaction).

Elucidating correlation-driven insulating state in an effective spin-½ antiferromagnet NdVO.

The= ½ state: a result of interplay of strong electronic correlations () with spin-orbit coupling (SOC) and crystal field splitting, offers a platform in the research of quantum materials. In this context, 4rare-earth based materials offer a fertile playground. Here, strong experimental and theoretical evidences for a= ½ state is established in a three-dimensional spin system NdVO.

Frequency dependent impedance response analysis of nanocrystalline ZnO chemiresistors.

ZnO is a widely studied gas sensor material and is used in many commercial sensor devices. However, selectivity towards any particular gas remains an issue due to lack of complete knowledge of the gas sensing mechanism of oxide surfaces. In this paper, we have studied the frequency dependent gas sensor response of ZnO nanoparticles of a diameter of nearly 30 nm.

Observation of short range ferromagnetic interactions and magnetocaloric effect in cobalt substituted GdSiGe.

We report on the observation of double transition - a first order and a second order transition in GdSiCoGe with x = 0, 0.1, 0.2 and 0.

Realization of giant magnetoelectricity in helimagnets.

We show that low field magnetoelectric (ME) properties of helimagnets Ba0.5Sr1.5Zn2(Fe1-xAlx)12O22 can be efficiently tailored by the Al-substitution level.