TY - JOUR
T1 - Exchange spring magnetic behavior of Sr0.3Ba0.4Pb0.3Fe12O19/(CuFe2O4)x nanocomposites fabricated by a one-pot citrate sol-gel combustion method
AU - Almessiere, M.A.
AU - Slimani, Yassine
AU - Baykal, A.
N1 - KAUST Repository Item: Exported on 2021-03-10
Acknowledgements: This research used resources of the Core Labs of King Abdullah University of Science and Technology (KAUST).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2018/9
Y1 - 2018/9
N2 - In this study, hard/soft Sr0.3Ba0.4Pb0.3Fe12O19/(CuFe2O4)x nanocomposites with various contents of the soft phase (x = 1, 2, 3, 4, and 5) have been synthesized via a one-pot citrate sol-gel route. The structure and magnetic properties of the prepared specimens were investigated using X-ray diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM) techniques as well as a vibrating sample magnetometer. The obtained XRD patterns revealed the formation of hard/soft ferrite nano-composites without secondary phases. The magnetic results showed that all the prepared nanocomposite magnets exhibit a good single-phase magnetic behavior, proving that the magnetic hard and soft phases are well exchange coupled. The dipolar interactions in the produced magnets were dominated by the exchange-coupling interactions at lower contents of the soft phase. Furthermore, the optimal values of saturation and remanent magnetizations, coercivity, and squareness ratio were obtained for the Sr0.3Ba0.4Pb0.3Fe12O19/CuFe2O4 nanocomposite magnet due to the dominance of exchange-coupling interaction. The greatest value of the maximum energy product, which represented the ultimate figure-of-merit for permanent magnets, was observed for the Sr0.3Ba0.4Pb0.3Fe12O19/CuFe2O4 composite, suggesting its potential applications in magnet fabrication and highly sensitive magnetic recording media.
AB - In this study, hard/soft Sr0.3Ba0.4Pb0.3Fe12O19/(CuFe2O4)x nanocomposites with various contents of the soft phase (x = 1, 2, 3, 4, and 5) have been synthesized via a one-pot citrate sol-gel route. The structure and magnetic properties of the prepared specimens were investigated using X-ray diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM) techniques as well as a vibrating sample magnetometer. The obtained XRD patterns revealed the formation of hard/soft ferrite nano-composites without secondary phases. The magnetic results showed that all the prepared nanocomposite magnets exhibit a good single-phase magnetic behavior, proving that the magnetic hard and soft phases are well exchange coupled. The dipolar interactions in the produced magnets were dominated by the exchange-coupling interactions at lower contents of the soft phase. Furthermore, the optimal values of saturation and remanent magnetizations, coercivity, and squareness ratio were obtained for the Sr0.3Ba0.4Pb0.3Fe12O19/CuFe2O4 nanocomposite magnet due to the dominance of exchange-coupling interaction. The greatest value of the maximum energy product, which represented the ultimate figure-of-merit for permanent magnets, was observed for the Sr0.3Ba0.4Pb0.3Fe12O19/CuFe2O4 composite, suggesting its potential applications in magnet fabrication and highly sensitive magnetic recording media.
UR - http://hdl.handle.net/10754/667989
UR - https://linkinghub.elsevier.com/retrieve/pii/S0925838818319510
UR - http://www.scopus.com/inward/record.url?scp=85047638454&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2018.05.232
DO - 10.1016/j.jallcom.2018.05.232
M3 - Article
SN - 0925-8388
VL - 762
SP - 389
EP - 397
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -