Frequency and temperature-dependent electric modulus spectroscopy of Os doped YbFeO3 structure.

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2019
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Abstract
Orthoferrites have occupied important place in the material science and condensed matter physics investigations due to their unique features such as electrical, magnetic and optical. The present investigation illuminates light on the electrical properties of osmium (Os) doped YbFeO3 (YbFO) rare-earth orthoferrite. The undoped YbFeO3 (YbFO) and YbFe1-xOsxO3 (YbFOO) (x = 0.01 and 0.05) powders were synthesized via solid-state. X-ray diffractometer (XRD) has been utilized to examine the crystal structure of the YbFO and YbFOO powders. The cross sectional morphology of the obtained pellets was inspected via scanning electron microscope (SEM). Moreover, X-ray photoelectron spectroscopy (XPS) was exploited to determine the oxidation states of the constituted elements. The electrical features for instance electrical modulus, dielectric constant and conductivity of the synthesized pellets were detailed at different frequencies and temperatures by dielectric/impedance spectroscopy studies. The x = 0.01 Os doped sample exhibits higher dielectric constant and conductivity compared to other samples. Moreover, in order to explain conductivity mechanism of the studied samples, multiple conduction models are needed to employ.
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Authors Polat, Özgür;Coskun, Mustafa;Kalousek, Radek;Zlámal, Jakub;Zengin Kurt, Belma;Caglar, Yasemin;Caglar, Mujdat;Turut, Abdulmecit;
Journal journal of physics condensed matter : an institute of physics journal
Year 2019
DOI 10.1088/1361-648X/ab4daa
URL
Keywords
SEM electrical properties ceramic orthoferrite ybfeo3 os doping solid-state method xps

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