Low-temperature fabrication of Co ferrite thin films with high coercivity for perpendicular recording disks by wet process

Kitamoto, Yoshitaka; Kantake, S.; Shirasaki, F.; Abe, Masanori; Naoe, M.

doi:10.1016/s0304-8853(98)00409-0

Cited by 17 publications

(2 citation statements)

References 4 publications

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“…These compositions have been utilized to manufacture a variety of electromagnetic devices [23,24]. Since spinel of type A 2+ B 2 3+ O 4 has drawn significant attention in a number of technological fields [25], cobalt ferrite is one of the possible candidates for magnetic and magneto-optical recording media [26][27][28][29]. Here, A and B stand for the tetrahedral and octahedral sites in the oxygen lattice, respectively.…”

Section: Introductionmentioning

confidence: 99%

Investigating the magnetic domain structure and photonics characters of Singled Phased hard ferromagnetic Ferrite MFe3O4 (M= Co2+, Zn2+, Cd2+) Compounds

Ibiyemi,

Yusuf,

Akirinola

et al. 2024

J. Nig. Soc. Phys. Sci.

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The impact of transition metals on ferrite (iron (III) oxide) compounds is investigated in this study. Ferrite samples were synthesized using the co-precipitation method. X-ray analysis unveiled the presence of the Fe-phase in the trivalent state, showcasing a single-phased cubic spinel framework with a preferred orientation along the (311) reflection plane. Crystallite sizes were determined for CdFe3O4, ZnFe3O4, and CoFe3O4 utilizing the Scherer equation, yielding values of 10.54 nm, 18.76 nm, and 32.63 nm, respectively. Zinc ferrite displayed an intermediate photonic nature compared to cobalt and cadmium ferrite, with cadmium ferrite showing high optical losses and cobalt ferrite exhibiting minimal optical losses. EDX analysis confirmed the presence of Zn2+, Co2+, Fe3+, Cd2+, and O2? ions in the correct ratios, supporting the intended stoichiometric composition. Optical assessment revealed that CoFe3O4 nanoparticles are well-suited for optoelectronic devices, ultraviolet detectors, and infrared (IR) detectors. VSM measurements of cobalt ferrite exhibited higher coercivity and magnetic saturation compared to other samples. Photoluminescence (PL) spectroscopy revealed multiple colors, including cyan, green, and yellow, at different wavelengths for the ferrite samples. These findings suggest that the synthesized samples are suitable materials for high-frequency devices owing to their robust magnetic properties. Cadmium ferrite displayed a multi-magnetic domain structure, contrasting with the single-magnetic domain structure observed in zinc and cobalt ferrite.

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Section: Introductionmentioning

confidence: 99%

Investigating the magnetic domain structure and photonics characters of Singled Phased hard ferromagnetic Ferrite MFe3O4 (M= Co2+, Zn2+, Cd2+) Compounds

Ibiyemi,

Yusuf,

Akirinola

et al. 2024

J. Nig. Soc. Phys. Sci.

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“…In recent years, nano-sized Co 3 O 4 has attracted much interest due to its much intriguing magnetic, optical, electronic and electrochemical properties [1][2][3][4][5][6][7][8][9] and potential applications in various fields such as electrochemical capacitors [4], solar energy absorbers [5,6], solid-state sensors [7], and magnetic materials [8][9][10][11]. Especially, nanostructured Co 3 O 4 , as an important magnetic material, has been researched in the past few years.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Nanostructured Co(OH)2 and Co3O4 Thin Films by a Simple Solution Growth Process

Liu

Nie

et al. 2013

KEM

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Nanostructured Co(OH)2thin films were synthesized by a simple solution growth process. In experiment, F–and NH3were used as Co2+ordination agents, and hydroxyl ions were supplied by ammonia hydroxide solution for the hydrolysis reaction. The results showed that the solution pH and F/Co ratio had great influences on the morphologies of the thin films. The Co(OH)2thin films were constructed with lots of Co(OH)2nanoflakes. Nanostructured Co3O4 thin films were prepared by annealing the Co(OH)2thin films at 400°C for 2 h. The magnetic properties of Co3O4thin films were also investigated.

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Magnetic properties of Co-ferrite thin films prepared by PLD with in situ heating and post-annealing

Yin

Ding

Chen

et al. 2006

Journal of Magnetism and Magnetic Materials

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Low-temperature fabrication of Co ferrite thin films with high coercivity for perpendicular recording disks by wet process

Cited by 17 publications

References 4 publications

Investigating the magnetic domain structure and photonics characters of Singled Phased hard ferromagnetic Ferrite MFe3O4 (M= Co2+, Zn2+, Cd2+) Compounds

Investigating the magnetic domain structure and photonics characters of Singled Phased hard ferromagnetic Ferrite MFe3O4 (M= Co2+, Zn2+, Cd2+) Compounds

Synthesis and Characterization of Nanostructured Co(OH)<sub>2</sub> and Co<sub>3</sub>O<sub>4</sub> Thin Films by a Simple Solution Growth Process

Magnetic properties of Co-ferrite thin films prepared by PLD with in situ heating and post-annealing

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