Abstract
We present a comparative study of the magnetic and electrical properties of polycrystalline and nanocrystalline Y2Ir2O7, the latter prepared using a new chemical route. We find that reduction in particle size leads to enhanced ferromagnetism and orders of magnitude enhancement of electrical conductivity in the nanocrystalline sample. Based on x ray photoelectron spectroscopy and x ray absorption near edge structure spectroscopy results, the phenomenon is attributed to the increased fraction of pentavalent oxidation state of Iridium and the resulting increase in double exchange interaction along with the weakening of spin orbit coupling strength in the nanocrystalline sample compared to the bulk.
Connections
Explore this paper’s authors, topics and related work.
Building this map preview
BZPEER is loading the nearby papers, people, topics and institutions for this page.
Reviews 0
Write a review
No reviews yet.
Discussion 0
Add a comment
No comments yet.