Structural and electrical properties of Nd.sub.1.7./sub.Ba.sub.0.3./sub.Ni.sub.0.9./sub.Cr.sub.0.1./sub.O.sub.4+δ./sub. compound

0389365 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Jammali, M. - Hassen, R.B. - Rohlíček, Jan
Structural and electrical properties of Nd_1.7Ba_0.3Ni_0.9Cr_0.1O_4+δ compound.
Powder Diffraction. Roč. 27, č. 3 (2012), s. 184-188. ISSN 0885-7156. E-ISSN 1945-7413
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: X-ray diffraction * sol-gel * Rietveld refinement * adiabatic small polaron hopping model * semi-conductive behaviour
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 0.544, rok: 2012

The title polycrystalline sample was synthesised and subsequently analysed by X-ray diffraction (XRD). An electrical transport properties have been investigated as well. The oxygen non stoichiometry was determined by iodometric titration. The sample shows to adopt the K2NiF4 type structure based on a tolerance factor calculation. The Nd1.7Ba0.3Ni0.9Cr0.1O4+δ compound compound exhibits a semiconductive behavior. The electrical transport mechanism has been investigated and it agrees with the adiabatic small polaron hopping model in the temperature range 313 K ≤ T ≤ 708 K.
Trvalý link: http://hdl.handle.net/11104/0218243