Future Scaling Potential of Particulate Media in Magnetic Tape Recording

Lantz, Mark A.; Elefteriou, Evangelos

doi:10.1016/b978-0-444-63291-3.00003-9

Cited by 3 publications

(3 citation statements)

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“…To develop high-density media and improve the thermal stability, ferrite-based (barium ferrite, cobalt ferrite or ε-Fe 2 O 3 ) media have been extensively investigated. − In particular, barium ferrite (BaFe) NPs can potentially offer smaller particles than FeCo NPs because of the high K eff of the hexagonal BaFe structure . Furthermore, the volume of BaFe NPs can be reduced without compromising the coercivity, resulting in high areal densities of up to 123 Gb/in 2 and cartridge capacities of 220 TB for BaFe-NP-based magnetic tapes . BaFe-particle cartridges with capacities of up to 10 TB are currently available; this is 4 times the capacity of FeCo particle tape cartridges, which have a maximum capacity of only 2.5 TB.…”

Section: Anisotropic Nanoparticle Arrays As Magnetic Recording Mediamentioning

confidence: 99%

“…(B) Development in storage capacity for the linear tape system, enterprise tape cartridge, and LTO tape cartridge in the last two decades. Reproduced with permission from ref . Copyright 2014 Elsevier.…”

Section: Anisotropic Nanoparticle Arrays As Magnetic Recording Mediamentioning

confidence: 99%

“…207 Furthermore, the volume of BaFe NPs can be reduced without compromising the coercivity, resulting in high areal densities of up to 123 Gb/in 2 and cartridge capacities of 220 TB for BaFe-NP-based magnetic tapes. 208 BaFe-particle cartridges with capacities of up to 10 TB are currently available; this is 4 times the capacity of FeCo particle tape cartridges, which have a maximum capacity of only 2.5 TB. Figure 28A shows a schematic representation of a typical magnetic tape's layer structure.…”

Section: Anisotropic Nanoparticle Arrays As Magnetic Recording Mediamentioning

confidence: 99%

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Magnetic Nanoparticles: Synthesis, Anisotropy, and Applications

et al. 2021

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Anisotropy is an important and widely present characteristic of materials that provides desired direction-dependent properties. In particular, the introduction of anisotropy into magnetic nanoparticles (MNPs) has become an effective method to obtain new characteristics and functions that are critical for many applications. In this review, we first discuss anisotropy-dependent ferromagnetic properties, ranging from intrinsic magnetocrystalline anisotropy to extrinsic shape and surface anisotropy, and their effects on the magnetic properties. We further summarize the syntheses of monodisperse MNPs with the desired control over the NP dimensions, shapes, compositions, and structures. These controlled syntheses of MNPs allow their magnetism to be finely tuned for many applications. We discuss the potential applications of these MNPs in biomedicine, magnetic recording, magnetotransport, permanent magnets, and catalysis. CONTENTS 4.5.1. Co-Based Rare-Earth Metal Alloy Nanoparticles 3917 4.5.2. Fe-Based Rare-Earth Metal Alloy Nanoparticles 4.6. Rare-Earth-Metal-Free Nanoparticles 4.6.1. MnBi and MnAl Nanoparticles 4.6.2. Metal Carbide Nanoparticles 5. Magnetic Nanoparticles with Enhanced Anisotropy for Biomedical Applications 5.1. Magnetic Nanoparticles for MRI 5.1.1. MRI in General 5.1.2. Magnetic Nanoparticles as MRI Contrast AgentS 5.1.3. Cubic Ferrite Nanoparticles as T 2 -Weighted MRI Contrast Agents 5.1.4. Cubic Ferrite Nanoparticles as T 1 -Weighted MRI Contrast Agents 5.

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Section: Anisotropic Nanoparticle Arrays As Magnetic Recording Mediamentioning

confidence: 99%

Section: Anisotropic Nanoparticle Arrays As Magnetic Recording Mediamentioning

confidence: 99%

Section: Anisotropic Nanoparticle Arrays As Magnetic Recording Mediamentioning

confidence: 99%

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Magnetic Nanoparticles: Synthesis, Anisotropy, and Applications

et al. 2021

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Coexistence of positive and negative magnetic entropy changes in CeMn ₂ (Si _{1 −
x} Ge _x ) ₂ compounds

Zuo¹,

Hu²,

Sun³

et al. 2015

Chinese Phys. B

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A series of CeMn2(Si1−xGex)2 (x = 0.2, 0.4, 0.6, 0.8) compounds are prepared by the arc-melting method. All the samples primarily crystallize in the ThCr2Si2-type structure. The temperature dependences of zero-field-cooled (ZFC) and FC magnetization measurements show a transition from antiferromagnetic (AFM) state to ferromagnetic (FM) state at room temperature with the increase of the Ge concentration. For x = 0.4, the sample exhibits two kinds of phase transitions with increasing temperature: from AFM to FM and from FM to paramagnetic (PM) at around TN ∼ 197 K and TC ∼ 300 K, respectively. The corresponding Arrott curves indicate that the AFM–FM transition is of first-order character and the FM–PM transition is of second-order character. Meanwhile, the coexistence of positive and negative magnetic entropy changes can be observed, which are corresponding to the AFM–FM and FM–PM transitions, respectively.

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Advanced magnetic tape technology for linear tape systems: Barium ferrite technology beyond the limitation of metal particulate media

Sakai

Harasawa

Noguchi

2014

2014 30th Symposium on Mass Storage Systems and Technologies (MSST)

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Future Scaling Potential of Particulate Media in Magnetic Tape Recording

Cited by 3 publications

References 53 publications

Magnetic Nanoparticles: Synthesis, Anisotropy, and Applications

Magnetic Nanoparticles: Synthesis, Anisotropy, and Applications

Coexistence of positive and negative magnetic entropy changes in CeMn ₂ (Si _{1 −
x} Ge _x ) ₂ compounds

Advanced magnetic tape technology for linear tape systems: Barium ferrite technology beyond the limitation of metal particulate media

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Future Scaling Potential of Particulate Media in Magnetic Tape Recording

Cited by 3 publications

References 53 publications

Magnetic Nanoparticles: Synthesis, Anisotropy, and Applications

Magnetic Nanoparticles: Synthesis, Anisotropy, and Applications

Coexistence of positive and negative magnetic entropy changes in CeMn 2 (Si 1 − x Ge x ) 2 compounds

Advanced magnetic tape technology for linear tape systems: Barium ferrite technology beyond the limitation of metal particulate media

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Product

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Coexistence of positive and negative magnetic entropy changes in CeMn ₂ (Si _{1 −
x} Ge _x ) ₂ compounds