Tuning electromagnetic properties of SrRuO3 epitaxial thin films via atomic control of cation vacancies

Title
Tuning electromagnetic properties of SrRuO3 epitaxial thin films via atomic control of cation vacancies
Authors
이수연이상아오석재이제곤황재열김지웅박성균배종성홍태은김성웅강원남최우석
Issue Date
2017-09
Publisher
Scientific Reports
Citation
VOL 7-7
Abstract
Elemental defect in transition metal oxides is an important and intriguing subject that result in modifications in variety of physical properties including atomic and electronic structure, optical and magnetic properties. Understanding the formation of elemental vacancies and their influence on different physical properties is essential in studying the complex oxide thin films. In this study, we investigated the physical properties of epitaxial SrRuO3 thin films by systematically manipulating cation and/or oxygen vacancies, via changing the oxygen partial pressure (P(O-2)) during the pulsed laser epitaxy (PLE) growth. Ru vacancies in the low-P(O-2)-grown SrRuO3 thin films induce lattice expansion with the suppression of the ferromagnetic T-C down to similar to 120 K. Sr vacancies also disturb the ferromagnetic ordering, even though Sr is not a magnetic element. Our results indicate that both A and B cation vacancies in an ABO(3) perovskite can be systematically engineered via PLE, and the structural, electrical, and magnetic properties can be tailored accordingly.
URI
http://pubs.kist.re.kr/handle/201004/67071
ISSN
2045-2322
Appears in Collections:
KIST Publication > Article
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