Alumnicommissie

Het eerste half jaar heeft de Alumnicommissie 'Alumissie' van de B.I.L. al hard gewerkt. Zo zijn wij aanwezig geweest bij de prinsjesdaganalyse, een interessante alumnilezing aan het voorbereiden en voor u ligt de eerste editie van de Bestuurskundige Berichten. Hieronder stelt de Alumnicommissie zich voor. Wij hopen u allen te mogen verwelkomen op de activiteiten en wensen u voor nu veel leesplezier toe

Electron doping effect on structural and magnetic phase transitions in Sr2-xNdxFeMoO6 double perovskites

Polycrystalline Sr2−xNdxFeMoO6 (x=0.0, 0.1, 0.2, 0.4) materials have been synthesized by a citrate co-precipitation method and studied by neutron powder diffraction (NPD) and magnetization measurements. Rietveld analysis of the temperature-dependent NPD data shows that the compounds (x=0.0, 0.1, 0.2) crystallize in the tetragonal symmetry in the range 10–400 K and converts to cubic symmetry above 450 K. The unit cell volume increases with increasing Nd3+ concentration, which is an electronic effect in order to change the valence state of the B-site cations. Antisite defects at the Fe–Mo sublattice increases with the Nd3+ doping. The Curie temperature was increased from 430 K for x=0 to 443 K for x=0.4. The magnetic moment of the Fe-site decreases while the Mo-site moment increases with electron doping. The antiferromagnetic arrangement causes the system to show a net ferrimagnetic moment

Colonia e postcolonia come spazi diasporici. Attraversamenti di memorie, confini e identità nel Corno d'Africa

Colony and postcolony are analysed as symbolic, identity, cultural spaces in constant motion: like memories and memberships, even colonial boundaries are not always rigid and immovable, but crossed, in fact, by resources and people that make them flexible, porous, non-negotiable. The volume presents a series of crosscutting reading on multiple memberships in the Horn of Africa region and multiple penetrations that result, today as yesterday, by diasporic and transnational movements at their margins