A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Strain-Induced Domain Structure and Its Impact on Magnetic and Transport Properties of Gd0.6Ca0.4MnO3 Thin Films




TekijätBeiranvand Azar, Rivasto Elmeri, Huhtinen Hannu, Paturi Petriina

KustantajaAMER CHEMICAL SOC

Julkaisuvuosi2021

JournalACS Omega

Tietokannassa oleva lehden nimiACS OMEGA

Lehden akronyymiACS OMEGA

Vuosikerta6

Numero50

Aloitussivu34572

Lopetussivu34579

Sivujen määrä8

ISSN2470-1343

eISSN2470-1343

DOIhttps://doi.org/10.1021/acsomega.1c04904

Verkko-osoitehttps://pubs.acs.org/doi/10.1021/acsomega.1c04904

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/68385885


Tiivistelmä

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.


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