ISBN 978-82-326-2066-1 (printed ver.) ISBN 978-82-326-2067-8 (electronic ver.) ISSN 1503-8181 Doctoral theses at NTNU, 2016:361 Magnus Nord EELS and STEM studies of perovskite oxide heterostructures Doctoral thesis Doctoral theses at NTNU, 2016:361 Magnus Nord NTNU Norwegian University of Science and Technology Thesis for the Degree of Philosophiae Doctor Faculty of Natural Sciences and Technology Department of Physics