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Investigating the Effects of Uniaxial Pressure on the Preparation of MgTiO3-CaTiO3 Ceramic Capacitors for MRI Systems
  • Zaineb JEBRI,
  • MAHFOUDH Taleb Ali,
  • Isabelle BORD-MAJEK
Zaineb JEBRI
Universite Bordeaux I

Corresponding Author:[email protected]

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Universite Bordeaux I
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Universite Bordeaux I
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Today’s healthcare system relies on MRI (medical resonance imaging) for early diagnosis and treatment planning. For open MRI systems to achieve resolutions of about a hundred microns, a high voltage is required, as well as a specialized power supply. NP0 (Negative-Positive-Zero) ceramic is selected for the fabrication of adjustable capacitors. Specifically, it stands for which is a classification based on the temperature coefficient of capacitance (TCC) of the ceramic material used in the capacitor. NP0 capacitors have a TCC of 0 ±30 ppm/°C, which means that their capacitance value does not change significantly with temperature and frequency. They are known for their stability and low losses, making them ideal for applications that require high accuracy and reliability, such as timing circuits for RF applications. In this paper, MgTiO-CaTiO ceramic is used to make an adjustable capacitor with desired properties for MRI systems. To enhance the dielectric properties of MgTiO3 ceramics,CaTiO3 was added in varying concentrations. After pressing and sintering, the resulting samples were tested using a vector network analyzer in the frequency range of 10 MHz to 130 MHz.The adjustable capacitor fabricated using high co-fired NP0 ceramic may have been used for MRI applications such as tuning circuits and matching networks, where precise capacitance values and low loss are critical[1]. MRI systems with resonance frequencies of 128 MHz require trimmers with ceramic cores.
03 Apr 2023Submitted to The Journal of Engineering
10 Apr 2023Submission Checks Completed
10 Apr 2023Assigned to Editor
23 Apr 2023Reviewer(s) Assigned
07 Jul 2023Review(s) Completed, Editorial Evaluation Pending
10 Jul 2023Editorial Decision: Revise Minor
24 Jul 20231st Revision Received
25 Jul 2023Submission Checks Completed
25 Jul 2023Assigned to Editor
03 Aug 2023Review(s) Completed, Editorial Evaluation Pending
03 Aug 2023Editorial Decision: Accept