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Full-Text Articles in Physical Sciences and Mathematics
Tuning The Thermal Relaxation Of Transition-Metal Ferrite Nanoparticles Through Their Intrinsic Magnetocrystalline Anisotropy, Jose M. Vargas, Abhishek Srivastava, Amin Yourdkhani, Luis Zaldivar, Gabriel Caruntu, Leonard Spinu
Tuning The Thermal Relaxation Of Transition-Metal Ferrite Nanoparticles Through Their Intrinsic Magnetocrystalline Anisotropy, Jose M. Vargas, Abhishek Srivastava, Amin Yourdkhani, Luis Zaldivar, Gabriel Caruntu, Leonard Spinu
Chemistry Faculty Publications
Monodispersed ferrite nanoparticles of Fe3O4, MnFe2O4, and CoFe2O4 (near to 10 nm), were synthesized by organometallic synthesis, showing the same homogeneous chemical, morphological, and crystalline characteristics. The study and correlation of the thermal relaxation processes were analyzed through static and dynamic measurements. Due to the intrinsic chemical characteristics and magnetocrystalline anisotropy of the ferrite nanoparticles, the energy barrier can be tuned to a range between 1100 K EB 7300 K, showing an alternative approach for tuning the magnetic dynamic properties, in contrast to the well-known mechanism through particle-size-effects. Specific loss power efficiencies were evaluated for the three ferrite samples. Comparing …
Highly Ordered Transition Metal Ferrite Nanotube Arrays Synthesized By Template-Assisted Liquid Phase Deposition, Amin Yourdkhani, Gabriel Caruntu
Highly Ordered Transition Metal Ferrite Nanotube Arrays Synthesized By Template-Assisted Liquid Phase Deposition, Amin Yourdkhani, Gabriel Caruntu
Chemistry Faculty Publications
Highly ordered spinel ferriteMxFe3_xO4 (M ¼ Ni, Co, Zn) nanotube arrays were synthesized in anodic aluminium oxide (AAO) templates with a pore size of 200 nm by combining a liquid phase deposition (LPD) method with a template-assisted route. The morphology of the transition metal ferrite nanotubes was characterized by electron microscopy (FE-SEM; TEM, SAED and HRTEM) and atomic force microscopy (AFM), whereas their chemical composition was determined by inductive coupling plasma (ICP). The phase purity was studied by X-ray diffraction (XRD) and the magnetic properties of the nanotubes were measured by SQUID measurements. Unlike the deposition of thin film structures, …