TY - JOUR
T1 - Synthesis, studies and growth mechanism of ferromagnetic NiFe 2 O 4 nanosheet
AU - Sivakumar, P.
AU - Ramesh, R.
AU - Ramanand, A.
AU - Ponnusamy, S.
AU - Muthamizhchelvan, C.
PY - 2012/6/15
Y1 - 2012/6/15
N2 - Nickel ferrite (NiFe 2 O 4 ) nanoparticles were prepared by a simple and cost-effective method using nickel nitrate, ferric nitrate, ethylene glycol and citric acid via polyvinylpyrrolidone (PVP) assisted sol-gel auto-combustion method. The structure, composition, morphology and magnetic properties of the gel precursor were characterised XRD confirmed the formation of single phase NiFe 2 O 4 with space group Fd3 m and inverse spinel structure and the crystallite size was found to be 29 nm. The FT-IR showed absorption bands, which were assigned to the vibration of tetrahedral and octahedral complexes. The thermal decomposition of the gel precursors was investigated by TGA. HR-SEM and TEM images showed sheet-like nanostructure. The magnetic properties of these nanosheets were studied for the enlightening ferromagnetic behaviour at room temperature. The magnetic saturation (M s = 41.70 emu g -1 ), remanent magnetisation (M r = 7.57 emu g -1 ) and coercive force (H c = 162.47 Oe), were determined.
AB - Nickel ferrite (NiFe 2 O 4 ) nanoparticles were prepared by a simple and cost-effective method using nickel nitrate, ferric nitrate, ethylene glycol and citric acid via polyvinylpyrrolidone (PVP) assisted sol-gel auto-combustion method. The structure, composition, morphology and magnetic properties of the gel precursor were characterised XRD confirmed the formation of single phase NiFe 2 O 4 with space group Fd3 m and inverse spinel structure and the crystallite size was found to be 29 nm. The FT-IR showed absorption bands, which were assigned to the vibration of tetrahedral and octahedral complexes. The thermal decomposition of the gel precursors was investigated by TGA. HR-SEM and TEM images showed sheet-like nanostructure. The magnetic properties of these nanosheets were studied for the enlightening ferromagnetic behaviour at room temperature. The magnetic saturation (M s = 41.70 emu g -1 ), remanent magnetisation (M r = 7.57 emu g -1 ) and coercive force (H c = 162.47 Oe), were determined.
KW - Chemical synthesis
KW - Nanostructure
KW - Polymer
KW - VSM
UR - http://www.scopus.com/inward/record.url?scp=84860262393&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2012.03.099
DO - 10.1016/j.apsusc.2012.03.099
M3 - Article
AN - SCOPUS:84860262393
SN - 0169-4332
VL - 258
SP - 6648
EP - 6652
JO - Applied Surface Science
JF - Applied Surface Science
IS - 17
ER -