Nanocomposites and nanomaterials

Analysis of PAL spectra for Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics within positron-positronium trapping algorithm 
H. Klym1, I. Hadzaman2, O. Shpotyuk3,4, A. Ingram5, 
Yu. Kostiv1
1 Lviv Polytechnic National University, Bandery str., 12, Lviv-79013, Ukraine 
E-mail: halyna..klym@lpnu.ua; klymha@yahoo.com  
2 Drohobych State Pedagogical University,
I. Franko str., 24, Drohobych-82100, Ukraine
3 Vlokh Institute of Physical Optics, Dragomanova str., 23, Lviv-79005, Ukraine
4 Jan Dlugosz University in Czestochowa, 
Armii Krajowej str., 13/15,  Czestochowa-42200, Poland
5 Opole University of Technology, Ozimska str., 75, Opole- 45370, Poland

Structural properties of technologically-modified temperature-sensitive Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics were studied using different experimental technique including positron annihilation lifetime (PAL) spectroscopy [1]. Previous investigations have shown that the quantity of the additional phase and its distribution in bulk and on the surface of ceramic samples are essentially influenced by temperature-time sintering regimes.
The results of PAL measurements (at treatment of spectra in two components) confirming the interphase mass-transfer processes occurred in mixed transition-metal manganite ceramics caused by monolitization processes during technological modification and owing to optimal content of additional NiO phase [1].
In this work we shall try to analyzed of PAL spectra for Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics with different amount of NiO phase using positron-positronium trapping algorithm [2]. In this case obtained spectra will be analyzed with LT 9.0 computer program using three-component fitting procedures.
   
1.	Klym H., Ingram A., et. al. Structural studies of spinel manganite ceramics with positron annihilation lifetime spectroscopy // Journal of Physics: Conference Series , 2011, 289(1), pp.012010.
2.	Shpotyuk O., Filipecki J., et. al. Positronics of subnanometer atomistic imperfections in solids as a high-informative structure characterization tool // Nanoscale research letters, 2015, 10(1): 77.