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Examination on High-Q NMR Transmit/Receiver Pickup Coils Made by YBa2Cu3O7-δ Thin Films
- Source :
- IEEE Transactions on Applied Superconductivity. 29:1-5
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- An important method to improve the sensitivity of a nuclear magnetic resonance (NMR) system is to increase the quality factor ( Q ) of the pickup coils. In this paper, we focus on the following three items: 1) effect of the surface resistance ( R s) of the YBa2Cu3O7-δ (YBCO) films on the Q of the NMR pickup coil; 2) relationship between coil line width and current flowing through coil; and 3) effect of Si-ion irradiation to YBCO films on the Q of the NMR pickup coils. In the study of 1), we examined the Q of the NMR pickup coils made by YBCO films with different R s and found that reduction of R s is useful in increasing the Q of the NMR pickup coils. In the study of 2), we simulated the current flowing in the NMR coils by an electromagnetic simulator, and found that wider microstrip lines of the NMR pickup coil increase the current. In the study of 3), we examined Si-ion irradiation effect to reduce R s of YBCO films, and found low irradiation energy and low irradiation density of Si-ion is useful to decrease R s and useful to obtain the high Q NMR pickup coils.
- Subjects :
- Materials science
Analytical chemistry
Yttrium barium copper oxide
Condensed Matter Physics
01 natural sciences
Microstrip
Electronic, Optical and Magnetic Materials
Magnetic field
chemistry.chemical_compound
chemistry
Electromagnetic coil
0103 physical sciences
Pickup
Irradiation
Electrical and Electronic Engineering
Thin film
010306 general physics
Sheet resistance
Subjects
Details
- ISSN :
- 23787074 and 10518223
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Applied Superconductivity
- Accession number :
- edsair.doi...........98b535feabd85630ab3bee5791e7c462