Controllable growth and magnetic characterization of electrodeposited nanocrystalline Ni–P alloy nanotube and nanowire arrays inside AAO template

Liu, Jingjun; Wang, Feng; Zhai, Junyun; Jing, Jian

doi:10.1016/j.jelechem.2010.02.017

Cited by 19 publications

(12 citation statements)

References 27 publications

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“…At room temperature, the magnetocrystalline anisotropy constant of bulk hcp cobalt was determined to be K 1 = 5.0 × 10 6 erg/cm 3 , while the shape anisotropy of magnetic nanowires was reported to be K s = π M 2 s = 6.10 6 erg/cm 3 [21]. From both the basic and applied research perspectives, a clear understanding of the effects of synthesis parameters (e.g., deposition current and time, pH solution) [22,23,24,25,26,27] and morphology (e.g., wire length and diameter) [6,9,28,29] on the magnetic properties of ordered nanowire arrays is essential. Despite some previous efforts [16,17], effects of the wire diameter on the magnetic properties of the ordered CoNiP nanowire arrays remained to be investigated.…”

Section: Introductionmentioning

confidence: 99%

Magnetization Reversal and Magnetic Anisotropy in Ordered CoNiP Nanowire Arrays: Effects of Wire Diameter

Thiem

Phan

2015

Sensors

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Ordered CoNiP nanowires with the same length of 4 µm and varying diameters (d = 100 nm–600 nm) were fabricated by electrodeposition of CoNiP onto polycarbonate templates. X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy confirmed the quality of the fabricated nanowires. Magnetic measurements and theoretical analysis revealed that the magnetization reversal and magnetic anisotropy were significantly influenced by varying of the diameters of the nanowires. There existed a critical wire diameter (dc ≈ 276 nm), below which the magnetization reversal occurred via a coherent rotation mode, and above which the magnetization reversal occurred via a curling rotation mode. The easy axis of the magnetization tended to change in direction from parallel to perpendicular with respect to the wire axis as the wire diameter exceeded dc ≈ 276 nm. With increasing wire diameter, the coercive field (Hc) and the remanent to saturation magnetization ratio (Mr/Ms) were also found to rapidly decrease in the range d = 100–400 nm and gradually decrease for d > 400 nm.

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Section: Introductionmentioning

confidence: 99%

Magnetization Reversal and Magnetic Anisotropy in Ordered CoNiP Nanowire Arrays: Effects of Wire Diameter

Thiem

Phan

2015

Sensors

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“…It was shown that, thanks to their hollow structure, NTs present lower magnetic interactions compared with the same diameter and same density NWs [9,45,49]. It was further indicated that the physical reason of low exchange energy in NTs was the absence of curling related vortices which are present in other magnetic structures.…”

Section: M Smentioning

confidence: 99%

“…Electrodeposition may be used as a fabrication methodology, but it is not as straight forward as for fabricating NWs. Therefore, modified routes of electrodeposition and various other approaches have been used to grow NTs of pure metals and alloys [40,[45][46][47][48][49][50][51][52][53] Arrays of Ni NTs were fabricated in track-etched 21 μm thick PC membranes with pore diameter (D) of 150 nm and packing density (P) of 6 %. They were fabricated using a two-step procedure as depicted in Fig.…”

Section: Electrodeposition Of Nws and Ntsmentioning

confidence: 99%

Magnetic Force Microscopy Characterization of Magnetic Nanowires and Nanotubes

Tabasum

Zighem

Piraux

et al. 2016

Magnetic Characterization Techniques for Nanomaterials

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The fundamental properties of 2D arrays of magnetic nanowires and nanotubes (NWs and NTs) have been well described theoretically, but real systems are subject to certain flaws and imperfections which strongly affect the mechanism and dynamics of magnetization reversal. Therefore, before exploiting the vast potential of magnetic NWs and NTs, there is a need to investigate the materials parameters as well as the field dependent magnetic properties in real systems. Amongst the various issues at stake for a comprehensive understanding of these arrays is the influence of long-range dipolar interactions because these interactions strongly influence the magnetization reversal and thus the switching field distributions (SFD) which plays a significant role for information storage. Particularly, the width of the SFD is important since smaller values of this parameter leads to less recording errors and it is also a measure of the quality of the recording media. Consequently, the understanding a

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“…Authors of [10] modified the magnetic properties of Ni-P by giving a specific geometric shape to the alloy. The alloy was synthesized in the form of nanotubes and nanowires.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Examining the effect of electrosynthesis conditions on the Ni-P alloy composition

Savchuk

Sknar

et al. 2017

EEJET

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Встановлено залежності складу сплаву Ni-P від умов електросинтезу. Показано, що утворен-ня фосфору відбувається в результаті електро-відновлення і диспропорціонування натрій гіпо-фосфіту за участю іонів гідрогену. Збільшення швидкості цих реакцій призводить до збільшення вмісту фосфору в сплаві. На підставі цього вста-новлено, що підвищення температури і кислотно-сті електроліту є сприятливими факторами для збільшення вмісту фосфору в сплаві Ni-P Ключові слова: електросинтез, сплав Ni-P, метилсульфонатний електроліт, буферні вла-стивості, утворення фосфору Установлены зависимости состава сплава Ni-P от условий электросинтеза. Показано, что образование фосфора происходит в результа-те электровосстановления и диспропорциониро-вания гипофосфита натрия при участии ионов водорода. Увеличение скорости этих реакций приводит к увеличению содержания фосфора в сплаве. На основании этого установлено, что повышение температуры и кислотности элек-тролита являются благоприятным фактора-ми для увеличения содержания фосфора в спла-ве Ni-P Ключевые слова: электросинтез, сплав Ni-P, метансульфонатный электролит, буферные свойства, образование фосфора UDC 544.654.2

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Controllable growth and magnetic characterization of electrodeposited nanocrystalline Ni–P alloy nanotube and nanowire arrays inside AAO template

Cited by 19 publications

References 27 publications

Magnetization Reversal and Magnetic Anisotropy in Ordered CoNiP Nanowire Arrays: Effects of Wire Diameter

Magnetization Reversal and Magnetic Anisotropy in Ordered CoNiP Nanowire Arrays: Effects of Wire Diameter

Magnetic Force Microscopy Characterization of Magnetic Nanowires and Nanotubes

Examining the effect of electrosynthesis conditions on the Ni-P alloy composition

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