Dissertation/Thesis Abstract

Design, synthesis, crystal structure and magnetic properties of novel osmium-based oxides in ordered rock salt structure type
by Nguyen, Phuong-Hieu T., M.S., California State University, Long Beach, 2015, 91; 1601918
Abstract (Summary)

AFM materials with triangular cationic sublattices give rise to geometric magnetic frustration. The goal of this project is to study frustrated systems by designed and synthesis of more frustrated systems. For this purpose, the 5d system of osmium transition metal oxide was chosen. The osmium-based compounds are then successfully synthesized using the conventional solid state method. The crystal structures are then characterized by different techniques such as X-ray diffraction and neutron diffraction. To determine the ordering of the crystal systems, magnetic susceptibility and heat capacity measurements are carried out. By employing the spin dimer analysis, magnetic exchange interactions are calculated. These novel osmium-based ordered rock salt structure type systems are then being compared to similar crystal systems in the text.

Indexing (document details)
Advisor: Derakhshan, Shahab
Commitee: Bu, Xianhui, Li, Lijuan
School: California State University, Long Beach
Department: Chemistry and Biochemistry
School Location: United States -- California
Source: MAI 55/02M(E), Masters Abstracts International
Subjects: Chemistry
Keywords: Antiferromagnetic, Crystal structure, Ferrimagnetic, Geometric magnetic frustration, Inorganic, Solid state
Publication Number: 1601918
ISBN: 978-1-339-14655-3
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