INMA seminar: Pedro Gorria
INMA Seminar: “What role does carbon play in the microstructure and magnetic properties of nickel nanoparticles grown in carbonaceous matrices?” – 20th June
On Thursday 20 June will take place a new INMA seminar by Prof Pedro Gorria, from the University of Oviedo, who will give a talk entitled: “What role does carbon play in the microstructure and magnetic properties of nickel nanoparticles grown in carbonaceous matrices?”.
ABSTRACT: The wide variety of applications in which 3d transition metal magnetic nanoparticles are nowadays used means that there is a huge research activity to try to control their physico-chemical properties. In this talk we will show how the magnetic behaviour of nickel nanoparticles grown in carbonaceous matrices is affected, depending on the presence or absence of an external oxide layer coating them. In particular, in the case of nickel, NiO is the only stable oxide formed, one of the archetypal antiferromagnetic systems, but whose magnetic behaviour can change drastically when the size is reduced below a certain critical value. In addition, we will discuss various phenomena observed at low temperatures such as the well-known “exchange-bias effect” and its dependence on the microstructure and morphology of both the nanoparticles and the carbon matrix.
The conference will take place on Thursday 20 June, at 10:00, in the Sala de Grados of the Faculty of Science (Ed A), University of Zaragoza.
