A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Strain-Induced Domain Structure and Its Impact on Magnetic and Transport Properties of Gd0.6Ca0.4MnO3 Thin Films
Tekijät: Beiranvand Azar, Rivasto Elmeri, Huhtinen Hannu, Paturi Petriina
Kustantaja: AMER CHEMICAL SOC
Julkaisuvuosi: 2021
Journal: ACS Omega
Tietokannassa oleva lehden nimi: ACS OMEGA
Lehden akronyymi: ACS OMEGA
Vuosikerta: 6
Numero: 50
Aloitussivu: 34572
Lopetussivu: 34579
Sivujen määrä: 8
ISSN: 2470-1343
eISSN: 2470-1343
DOI: https://doi.org/10.1021/acsomega.1c04904
Verkko-osoite: https://pubs.acs.org/doi/10.1021/acsomega.1c04904
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/68385885
The evolution of lattice strain on crystallographic domain structures and magnetic properties of epitaxial low-bandwidth manganite Gd0.6Ca0.4MnO3 (GCMO) films have been studied with films on different substrates: SrTiO3, (LaAlO3)0.3(Sr2AlTaO6)0.7, SrLaAlO3, and MgO. The X-ray diffraction data reveals that all of the films, except the films on MgO, are epitaxial and have an orthorhombic structure. Cross-sectional dependent microstructural defects. Large-enough tensile strain can increase oxygen vacancies concentration near the interface and can induce vacancies in the substrate. In addition, a second phase was observed in the films with tensile strain. However, compressive strain causes dislocations in the interface and a mosaic domain structure. On the other hand, the magnetic properties of the films, including saturation magnetization, coercive field, and transport property depend systematically on the substrate-induced strain. Based on these results, the choice of appropriate substrate is an important key to obtaining high-quality GCMO film, which can affect the functionality of potential device applications.
Ladattava julkaisu This is an electronic reprint of the original article. |