title: Spectroscopic characterization of nanocrystalline chromium nitride (CrN).
abstract: Nanocrystalline chromiuim nitride has been synthesised by direct gas phase nitridation of nanocrystalline chromia at 1100 degrees C in ammonia-atmosphere. XRD of this material showed formation of single phase CrN with particle size around 20 nm. AFM studies showed particle distribution along with some soft agglomerated nanostructures. Nanocrystalline Cr2O3 and partially-as well as fully--converted nanocrystalline CrN were also investigated using various spectroscopic techniques like XPS, FT-IR, and Raman for gaining insight into the conversion pathways. Spectroscopic investigations of these materials clearly indicate that complete conversion of CrN occurs by nitriding at 1100 degrees C for 4 hrs. The salient spectroscopic features of these nanocrystalline materials with respect to their microcrystalline counterparts are discussed.
authors: Materials Science Division, Indira Gandhi Center for Atomic Research, Kalpakkam-603102, Tamil Nadu, India.
authors: G
authors: G
authors: Mangamma
authors: T N
authors: TN
authors: Sairam
authors: S
authors: S
authors: Dash
authors: M
authors: M
authors: Rajalakshmi
authors: M
authors: M
authors: Kamruddin
authors: V K
authors: VK
authors: Mittal
authors: S V
authors: SV
authors: Narasimhan
authors: A K
authors: AK
authors: Arora
authors: C S
authors: CS
authors: Sundar
authors: A K
authors: AK
authors: Tyagi
authors: Baldev
authors: B
authors: Raj
mesh_terms: D017608:Chromium Compounds / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D018625:Microscopy, Atomic Force; D036103:Nanotechnology; D010316:Particle Size; D033362:Powder Diffraction; D013055:Spectrophotometry, Infrared; D013057:Spectrum Analysis; D013059:Spectrum Analysis, Raman; D014965:X-Rays
chemical_list: D017608:Chromium Compounds