The preparation of cylindrical MgB2 films on stainless steel by HPCVD for magnetic shielding

Guo, Zhengshan; Cai, Xiong; Yang, Can; Niu, Ruirui; Liao, Xuebin; Zhang, Yan; Luo, Wenhao; Huang, Zigeng; Feng, Qian; Gan, Zizhao

doi:10.1016/j.physc.2018.06.002

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…The quartz used in the QCM traditionally works well under 300 °C and potentially exhibits phase transformation in the 500–600 °C range. HPCVD, whose working temperature is ∼700–800 °C, − is thus inappropriate unless the film is mechanically transferred to the QCM after deposition on a different substrate.…”

Section: Introductionmentioning

confidence: 99%

Deposition of Ultrathin MgB₂ Films from a Suspension Using Cosolvent Marangoni Flow

et al. 2023

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Magnesium diboride (MgB 2 ) has demonstrated, theoretically and experimentally, promise as a candidate material for hydrogen storage and has thus attracted much contemporary research interest. To study hydrogen gas adsorption on MgB 2 thin films using a quartz crystal microbalance (QCM)�a workhorse apparatus for this specific experiment�MgB 2 must be deposited uniformly on the active surface of the QCM without damaging the quartz's performance. In work presented here, a wet-chemistry colloid synthesis and deposition process of a MgB 2 thin film on a gold (Au) surface was established to avoid the extreme conditions of conventional physical deposition methods. This process also counteracts the unwanted phenomena of drying droplets on a solid surface, particularly the coffee-ring effect. To verify the normal function of the QCM after MgB 2 deposition and its ability to obtain meaningful data, simple gas adsorption tests were conducted on the QCM, and the MgB 2 film on the QCM was characterized with X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) for elemental analysis and surface roughness, respectively. To obtain information about the thickness and the involvement of the coffee-ring effect, the same synthesis route was applied on a similar gold substrate�an evaporated Au film on glass. XPS characterization of the film and its precursor suspension shows the potential existence of both MgB 2 and its oxide forms. The film's thickness on evaporated Au was measured by scanning transmission electron microscopy (STEM) to be 3.9 nm. The resulting samples show mitigation of the coffeering effect through roughness measurements with AFM at two scan sizes of 50 × 50 and 1 × 1 μm 2 .

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Section: Introductionmentioning

confidence: 99%

Deposition of Ultrathin MgB₂ Films from a Suspension Using Cosolvent Marangoni Flow

et al. 2023

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Review on the state-of-the-art and challenges in the MgB2 component manufacturing for superconducting applications

Carvalho de Castro Sene

2024

Superconductivity

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HPCVD Thin Film MgB₂ for Superconducting Magnetic Shielding

Cai

Guo

Yang

et al. 2019

IEEE Trans. Appl. Supercond.

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The preparation of cylindrical MgB2 films on stainless steel by HPCVD for magnetic shielding

Cited by 3 publications

References 27 publications

Deposition of Ultrathin MgB₂ Films from a Suspension Using Cosolvent Marangoni Flow

Deposition of Ultrathin MgB₂ Films from a Suspension Using Cosolvent Marangoni Flow

Review on the state-of-the-art and challenges in the MgB2 component manufacturing for superconducting applications

HPCVD Thin Film MgB₂ for Superconducting Magnetic Shielding

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The preparation of cylindrical MgB2 films on stainless steel by HPCVD for magnetic shielding

Cited by 3 publications

References 27 publications

Deposition of Ultrathin MgB2 Films from a Suspension Using Cosolvent Marangoni Flow

Deposition of Ultrathin MgB2 Films from a Suspension Using Cosolvent Marangoni Flow

Review on the state-of-the-art and challenges in the MgB2 component manufacturing for superconducting applications

HPCVD Thin Film MgB2 for Superconducting Magnetic Shielding

Contact Info

Product

Resources

About

Deposition of Ultrathin MgB₂ Films from a Suspension Using Cosolvent Marangoni Flow

Deposition of Ultrathin MgB₂ Films from a Suspension Using Cosolvent Marangoni Flow

HPCVD Thin Film MgB₂ for Superconducting Magnetic Shielding