Modification and development of electrical and magnetic properties of PVA/PEO incorporated with MnCl2

作者：Elashmawi I S^*; Abdelrazek E M; Hezma A M; Rajeh A

来源：Physica B: Condensed Matter , 2014, 434: 57-63.

DOI：10.1016/j.physb.2013.10.038

• Blend
• AC conductivity
• CBH model
• ESR
• VSM

The electrical and magnetic properties PVA/PEO films incorporated with different weight percentage of MnCl2 prepared by casting technique were studied. The Magnetic properties were investigated by electron spin resonance (ESR) and vibrating sample magnetometer (VSM). The electrical conductivity was enhanced depends on both frequencies and temperatures indicate the existence of charge carriers transported by hopping through defect sites attributed to increase in the number of mobile charge carriers of Mn+2. The AC conduction mechanism and conduction parameters have been calculated according to the Correlated barrier hopping (CBH) model. ESR spectra reveals aggregated forms of Mn2+ ions are formed at higher concentration and isolated forms at lower concentration. VSM shows paramagnetic nature for pure MaCl(2) and anti-ferromagnetic nature for doped samples due to overlapping of Mn d-states with valence band.

• 出版日期2014-2-1