Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)

Increased Curie temperature and magnetoresistive response by modifying Fe/Mo ratio in Sr2FeMoO6 thin films




Julkaisun tekijät: Naushahi Naman A, Angervo Ilari, Saloaro Minnamari, Schulman Alejandro, Huhtinen Hannu, Paturi Petriina

Kustantaja: Elsevier

Julkaisuvuosi: 2022

Journal: Journal of Magnetism and Magnetic Materials

Tietokannassa oleva lehden nimi: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

Lehden akronyymi: J MAGN MAGN MATER

Volyymi: 564

Sivujen määrä: 6

ISSN: 0304-8853

eISSN: 1873-4766

DOI: http://dx.doi.org/10.1016/j.jmmm.2022.169990

Verkko-osoite: https://doi.org/10.1016/j.jmmm.2022.169990

Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/177178982


Tiivistelmä

We investigated the effect of deposition distance on a set of otherwise identically grown Sr2FeMoO6 (SFMO) thin films grown by pulsed laser deposition. Based on the detailed magnetic and transport measurements, we found that the optimal properties can be realized at longer deposition distances than earlier expected. The achieved onset Curie temperature of the order of 400 K with the middle transition value of 372 K, which are clearly the highest presented in the literature for the SFMO thin films. In addition, the increased metallicity and magnetoresistive response is observed in films deposited at longer distances. The improvements are widely discussed in the light of discovered stoichiometric imbalance between the cations Fe and Mo, which modify the magnetic interactions and thus magnetic and electric properties. Therefore, this study shows a new approach in the deposition process to provide the SFMO thin films and multilayers of high quality for future spin valve devices working at room temperature.


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Last updated on 2022-09-12 at 10:58