Abstract
The Curie temperature and its correlation with the magnitude of the displacement of the niobium atom from the center of [NbO 6] octahedra in NaSr 2Nb 5O 15 nanostructured powder were investigated. A single powder was prepared by high-energy ball milling. A powder with an average crystallite size of 37 nm was prepared by calcining the precursor at 1423 K. The refinement of the structural parameters was carried out by the Rietveld method. NaSr 2Nb 5O 15 exhibits tetragonal symmetry with the tungsten bronze structure ( a= b=12.3495 (6) Å, c=3.8911 (2) Å, V=593.432 (5) Å 3, and Z=2). The site occupancy of the Na + and Sr 2+ cations and the interatomic distances between the niobium and oxygen atoms were derived. The [NbO 6] octahedron undergoes both rotation and tilting depending on the crystallographic site. The Curie temperature of the powder was derived using both the impedance and infrared spectroscopy methods.
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.
