Extracting the cation distributions in NiFe2−xAlxO4 solid solutions using magnetic Compton scattering. (16th October 2015)

• Record Type: Journal Article
• Authors: Kamali, S; Shih, K; Barbiellini, B; Wang, Y J; Kaprzyk, S; Itou, M; Bansil, A; Sakurai, Y
• Is Part Of: Journal of physics. Volume 27:Number 45(2015)
• Publication Date: 2015-10-16
• Subjects: nickel ferrite -- NiFe2O4 -- NiAl2O4 -- solid solution -- magnetism -- magnetic Compton scattering -- band structure calculations; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/27/45/456003
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We discuss the ground state electronic structure and magnetization properties of a series of NiFe2− x Al x O4 solid solutions ( x = 0.0, 0.4, 0.8, 1.2, 1.6, and 2.0) using magnetic Compton scattering measurements, together with parallel first-principles computations. In this way, we systematically extract the complicated cation distributions in this ferrite system as a function of x . The relationship between the electronic ground state, magnetism, and cation distributions is explained in terms of a model, validated by our first-principles computations, wherein the magnetic properties of the three cation distributions are assumed to be different. A good accord is found between the computed and measured magnetic Compton profiles.