TY - JOUR
T1 - Correlative structural refinement-magnetic tunability, and enhanced magnetostriction in low-temperature, microwave-annealed, Ni-substituted CoFe2O4 nanoparticles
AU - Mane, Sagar M.
AU - Teli, Aviraj M.
AU - Tayade, Nishant T.
AU - Pawar, Kanchan J.
AU - Kulkarni, Shrinivas B.
AU - Choi, Jonghyeon
AU - Yoo, Jung Woo
AU - Shin, Jae Cheol
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/2/25
Y1 - 2022/2/25
N2 - The preparation of nanomaterials by conventional methods involves multiple steps that are time- and energy-consuming; hence, it must be replaced by clean, environment-friendly processes. Nanostructured mixed spinel ferrites have wide applicability given their electrical, magnetic, and magnetostrictive properties. Herein, we present an ultrafast, eco-friendly, and thermally efficient microwave (MW)-heating technique to replace the conventional strategies for the preparation of Ni-doped CoFe2O4 ferrite nanoparticles. Mixed spinel ferrite nanoparticles are obtained through an MW technique carried out for 20 min at 600 °C. The cubic nature of the MW-processed, Ni-substituted CoFe2O4 spinel ferrite is demonstrated by Rietveld refinement. Composition-dependent tunable magnetic properties associated with cation distribution and average crystallite size variation are realized by the substitution of Ni2+ at Co2+ in the CoFe2O4 lattice. The highest values of saturation magnetization and coercivity are noted for the Co0.9Ni0.1Fe2O4 ferrite at 5 K and the average crystallite size is ~ 20 nm; the octa to tetra transition of Co2+ is observed owing to substitution by Ni2+ ions. The highest values of magnetostrictive coefficient and strain sensitivity are detected for CoFe2O4; the Ni2+-substituted Co0.9Ni0.1Fe2O4 also exhibits nearly identical behavior. Thus, Ni2+-substituted CoFe2O4 is a remarkable magnetostrictive material suitable for developing magnetoelectric composites and magneto-mechanical sensor applications. Moreover, it is observed that efficient, fast, and eco-friendly microwave processing can be adopted as an alternative approach for low-temperature processing such kinds of nanostructured materials for future electromagnetic device applications.
AB - The preparation of nanomaterials by conventional methods involves multiple steps that are time- and energy-consuming; hence, it must be replaced by clean, environment-friendly processes. Nanostructured mixed spinel ferrites have wide applicability given their electrical, magnetic, and magnetostrictive properties. Herein, we present an ultrafast, eco-friendly, and thermally efficient microwave (MW)-heating technique to replace the conventional strategies for the preparation of Ni-doped CoFe2O4 ferrite nanoparticles. Mixed spinel ferrite nanoparticles are obtained through an MW technique carried out for 20 min at 600 °C. The cubic nature of the MW-processed, Ni-substituted CoFe2O4 spinel ferrite is demonstrated by Rietveld refinement. Composition-dependent tunable magnetic properties associated with cation distribution and average crystallite size variation are realized by the substitution of Ni2+ at Co2+ in the CoFe2O4 lattice. The highest values of saturation magnetization and coercivity are noted for the Co0.9Ni0.1Fe2O4 ferrite at 5 K and the average crystallite size is ~ 20 nm; the octa to tetra transition of Co2+ is observed owing to substitution by Ni2+ ions. The highest values of magnetostrictive coefficient and strain sensitivity are detected for CoFe2O4; the Ni2+-substituted Co0.9Ni0.1Fe2O4 also exhibits nearly identical behavior. Thus, Ni2+-substituted CoFe2O4 is a remarkable magnetostrictive material suitable for developing magnetoelectric composites and magneto-mechanical sensor applications. Moreover, it is observed that efficient, fast, and eco-friendly microwave processing can be adopted as an alternative approach for low-temperature processing such kinds of nanostructured materials for future electromagnetic device applications.
KW - Cation distribution
KW - Magneto-mechanical properties
KW - Microwave processing
KW - Mixed spinel ferrite
KW - Tunable magnetic properties
UR - http://www.scopus.com/inward/record.url?scp=85118956747&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2021.162627
DO - 10.1016/j.jallcom.2021.162627
M3 - Article
AN - SCOPUS:85118956747
SN - 0925-8388
VL - 895
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 162627
ER -