Abstract
Room-temperature perpendicular magnetic anisotropy (PMA) is an essential property for devices based on spintronic technology, and is still a great challenge in transition-metal oxide conductors. In this work, we demonstrated the development of the high-quality NiCo2O4 (NCO) films onto MgAl2O4 (MAO) substrate by precise control over the growth parameters in the pulsed laser deposition process. The characteristics of strong out-of-plane magnetic easy axis, robust anomalous Hall effect, and smaller angle dependence of magnetoresistance in perpendicular direction are observed in metallic NCO films above 300 K. Thus, the obvious room-temperature PMA behavior is supported by these electric transport and magnetic results. This work is further expanded to investigate the valence state, spin and orbital magnetic moment of the NCO film. The Ni2+, Ni3+, Co2+, and Co3+ cations are existed in NCO film, and the orbital magnetic moment of Ni and Co are antiparallel with each other. As a result, the cation concentration ratio exhibits significant influence upon the magnetism and electric transport. The remarkable coexistence of room-temperature PMA and metallic transport is promising to the multi-function application in spintronics devices.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
