Formation and characterization of magnetic barium ferrite hollow fibers with low coercivity via co-electrospun

Liu, Guifang; Zhang, Zidong; Dang, Feng; Cheng, Chuanbing; Hou, Chuanxin; Liu, Sida

doi:10.1016/j.jmmm.2016.03.081

Cited by 27 publications

(11 citation statements)

References 41 publications

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“…In addition, a vertical acicular morphology may lead to increase of H c values. As stated in study [16] which investigated the hollow fibers with high M s and while comparatively low H c , the H c is mainly affected by the surface morphology. It was concluded in the present study that the irregular structure of acicular morphology and relatively high size of Al fcc (111) crystallite enhance the increase in H c values as found in Ni/Al multilayer with Ni layers thickness of 70 nm.…”

Section: Resultsmentioning

confidence: 90%

“…In addition, the high M s values are necessary to reduce their dimensions and obtain effective small devices [15]. The magnetic materials with high M s and low H c are very promising for the magnetic technology [16], especially for write heads [17,18]. This magnetic condition is also valid for devices which contain a typical electromagnet [14].…”

Section: Introductionmentioning

confidence: 99%

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Structural and Corresponding Magnetic Properties of Sputtered Ni/Al Multilayer Films: Effect of Ni Layer Thickness

2018

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A series of Ni/Al multilayers with different thicknesses of Ni layers was produced by a sputtering technique. The deposition parameters of optimum magnetic properties for write heads were detected by scanning the magnetic layer thickness from 0 to 70 nm. The optimum magnetic properties were decided by obtaining the saturation magnetization, Ms, coercivity, Hc and Ms/Hc ratios from the hysteresis loops. A face centered cubic (fcc) structure was established for all films. Transition surface morphology; i.e., a surface morphology between an apical + uneven structure (observed for the mono layered Al film) and an acicular + relatively smooth structure (observed for the films with Ni layer thicknesses of 30 nm and 70 nm) occurred on the surface of the film with Ni layer thickness of 10 nm. This transition surface morphology was very similar to that of the substrate as compared to the other morphologies and it may lead to relatively lower Hc value. A significant increase in Hc value was detected for Ni/Al film with Ni layer thickness of 70 nm. The increase was attributed to the irregular acicular morphology of substrate and high crystallite size of Al fcc (111). The deposition parameters of 8[Ni(10 nm)/Al(10 nm)] multilayer can be considered in order to support the higher Ms/Hc ratio which has a key role for effective technological applications of write heads.

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Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Structural and Corresponding Magnetic Properties of Sputtered Ni/Al Multilayer Films: Effect of Ni Layer Thickness

2018

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“…Hence, it is suggested that the electrospun Ce 0.96 Fe 0.04 O 2 NFs can be further developed for many applications including ferrofluids, magnetic recording, biomedicine, and spintronics. Furthermore, Liu et al [25] prepared BaFe 12 O 19 fibers and hollow fibers by electrospinning and coaxial electrospinning method, respectively. They elucidated that the hollow NFs had low coercivity values of a few hundred Oersted while NFs have more than a thousand Oersted.…”

Section: Applications Of Ceramic Electrospun Matsmentioning

confidence: 99%

“…Reprinted with permission from Ref. [25]; ( g ) CdTiO 3 NFs calcined at 600 °C. Reprinted with permission from Ref.…”

Section: Figurementioning

confidence: 99%

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Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

2017

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Ceramic nanofibers (NFs) have recently been developed for advanced applications due to their unique properties. In this article, we review developments in electrospun ceramic NFs with regard to their fabrication process, properties, and applications. We find that surface activity of electrospun ceramic NFs is improved by post pyrolysis, hydrothermal, and carbothermal processes. Also, when combined with another surface modification methods, electrospun ceramic NFs result in the advancement of properties and widening of the application domains. With the decrease in diameter and length of a fiber, many properties of fibrous materials are modified; characteristics of such ceramic NFs are different from their wide and long (bulk) counterparts. In this article, electrospun ceramic NFs are reviewed with an emphasis on their applications as catalysts, membranes, sensors, biomaterials, fuel cells, batteries, supercapacitors, energy harvesting systems, electric and magnetic parts, conductive wires, and wearable electronic textiles. Furthermore, properties of ceramic nanofibers, which enable the above applications, and techniques to characterize them are briefly outlined.

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Basics of Ferrites: Types and Structures

Dhiman

Rana

Goyal

et al. 2021

Engineering Materials

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This chapter summarizes the detailed introduction, types of magnetism, classifications of ferrites and their crystal structure. In addition, this chapter has the main focus on the magnetic properties possessed by ferrites on the basis of the soft and hard nature of ferrite materials. This chapter summarizes the recent work on the magnetic and dielectric properties of ferrites. Ferrites are primarily known for their high resistivity and highly magnetic nature which makes them suitable material over a wide range of applications like magnetic storage devices, antennas, transformers and other high-frequency devices. A great benefit of ferrites nanoparticles is the porosity, mandatory for sensor applications too. In short, ferrites belong to the materials which are a potential candidate for widely spread applications.

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Formation and characterization of magnetic barium ferrite hollow fibers with low coercivity via co-electrospun

Cited by 27 publications

References 41 publications

Structural and Corresponding Magnetic Properties of Sputtered Ni/Al Multilayer Films: Effect of Ni Layer Thickness

Structural and Corresponding Magnetic Properties of Sputtered Ni/Al Multilayer Films: Effect of Ni Layer Thickness

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

Basics of Ferrites: Types and Structures

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