Carbon nanotubes (CNT) are one of the most fascinating discoveries in 20th
century which exhibits superior properties in mechanical , electrical, optical and
thermal properties. CNT can be either semiconducting or metallic, ...
This thesis is in two parts: First part relates to tuning of the granular magneto-resistance
(MR), which naturally occurs in systems consisting of ferromagnetic (FM) metallic grain
and antiferromagnetic (AFM)/ insulating ...
A home-built AC susceptometer is designed and fabricated for the measurement of phase resolved linear and nonlinear AC susceptibilities. The set up is designed for measurements in the temperature ranging from 77K to 300K, ...
The aim of this project is to probe the characteristic magnetic properties of elemental
gadolinium using the technique of AC magnetic susceptibility. To this end, a home made
AC susceptometer was used to probe a ...
Certain antiferromagnets (AFMs) show the phenomenon of spin canting when it is symmetry allowed. Aside from being responsible for exotic spin structures like skyrmions, the phenomenon of weak ferromagnetism also shows a ...
Magnetite is a well-known ferrimagnetic material with a metallic cubic inverse-spinel structure at room temperature and a high Curie temperature of 858K. Magnetite also possesses a low-temperature phase transition known ...
CrO2 is a well-known half metallic ferromagnet with TC ~ 400K. In granular form, surface layer CrO2 contains another oxide Cr2O3, which is an insulator. Due to the presence of insulating surface layer, granular CrO2 is ...