Fabrication and Magnetic Characterization of CFO/NiO and CFO/NiS Heterostructures

Journal Article · Sun Sep 15 04:00:00 EDT 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-019-5032-5· OSTI ID:22922893

Haque, Ariful; Ghosh, Kartik ^[1]

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1. Missouri State University, Department of Physics, Astronomy and Materials Science (United States)

Magnetic analysis of different magnetic bilayers and multilayers is an important step for designing next-generation multiferroic heterostructures. In this study, we have investigated the magnetic interaction at the interface in CFO/NiO hetero-structures grown by pulsed laser deposition on sapphire substrates. The thin film heterostructure samples were characterized by means of X-ray diffraction, scanning electron microscopy (SEM), energy disruptive X-ray spectroscopy (EDS), and superconducting quantum interference device (SQUID) for magnetic measurements. The XRD analysis on different samples shows the crystalline growth of the thin films. The SEM-EDS analysis provides information about structural and elemental compositions of the heterostructure films. A SQUID magnetometer was used to investigate the temperature and field-dependent magnetic properties. To better understand the magnetic properties of the thin film heterostructure samples, zero field cool (ZFC) and field cool (FC) magnetization data were analyzed. At low temperature, ferromagnetic hysteresis loop was observed. A shift in the M-H hysteresis curve was observed for the FC data from the ZFC data, which indicates the presence of exchange bias effect. In addition, we have examined the effect of antiferromagnetic NiS thin films on ferromagnetism of CFO. This study on the magnetic interaction between a ferromagnetic layer and an antiferromagnetic layer can advance the frontier for applications in spin valves, magnetic sensors, and magnetic random access memory.

• OSTI ID: 22922893
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 9 Vol. 32; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETISM
CRYSTAL GROWTH
ENERGY BEAM DEPOSITION
FERROMAGNETISM
HYSTERESIS
LASER RADIATION
LAYERS
MAGNETIC PROPERTIES
MAGNETIZATION
MAGNETOMETERS
NICKEL OXIDES
NICKEL SULFIDES
PULSED IRRADIATION
SAPPHIRE
SCANNING ELECTRON MICROSCOPY
SENSORS
SQUID DEVICES
THIN FILMS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY