Abstract
Because of pick-up coil's flat design, relatively low operation frequency (∼ 23 MHz) and high relative resolution (10-6) a single-layer Open-Flat Coil-based tunnel diode oscillator (OFC-magnetometer) has advantages, compared to other test methods. They become crucial at nondestructive studies with thin flat HTS materials (with small signals), especially near Tc (at start of the 'Cooper' pairs' formation). Due to these a new 'Para-Magnetic' peculiarity of the normal-to-superconductive (N/S) transition was detected recently in YBaCuO films. It precedes the 'Meissner' ejection and specifies details of. an actually complicated shape of the N/S transition curve. We discuss influence of the currents and magnetic field on the PM effect and relationship between the quality of HTS material and amplitude of the effect. Differences between PM effect and externally close 'paramagnetic Meissner' and resistive 'peak' effects are discussed too.
| Original language | English |
|---|---|
| Pages (from-to) | 3574-3577 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 13 |
| Issue number | 2 III |
| DOIs | |
| Publication status | Published - Jun 1 2003 |
| Event | 2002 Applied Superconductivity Conference - Houston, TX, United States Duration: Aug 4 2002 → Aug 9 2002 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Cite this
Complicated shape of the superconductive transition curve revealed by a sensitive OFC-magnetometer. / Gevorgyan, Samvel; Kiss, Takanobu; Shirinyan, Hovsep; Movsisyan, Artur; Gevorgyan, Vardan; Egashira, Shinichi; Eltsev, Yuri; Matsushita, Teruo; Mito, Toshiyuki; Takeo, Masakatsu.
In: IEEE Transactions on Applied Superconductivity, Vol. 13, No. 2 III, 01.06.2003, p. 3574-3577.Research output: Contribution to journal › Conference article
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TY - JOUR
T1 - Complicated shape of the superconductive transition curve revealed by a sensitive OFC-magnetometer
AU - Gevorgyan, Samvel
AU - Kiss, Takanobu
AU - Shirinyan, Hovsep
AU - Movsisyan, Artur
AU - Gevorgyan, Vardan
AU - Egashira, Shinichi
AU - Eltsev, Yuri
AU - Matsushita, Teruo
AU - Mito, Toshiyuki
AU - Takeo, Masakatsu
PY - 2003/6/1
Y1 - 2003/6/1
N2 - Because of pick-up coil's flat design, relatively low operation frequency (∼ 23 MHz) and high relative resolution (10-6) a single-layer Open-Flat Coil-based tunnel diode oscillator (OFC-magnetometer) has advantages, compared to other test methods. They become crucial at nondestructive studies with thin flat HTS materials (with small signals), especially near Tc (at start of the 'Cooper' pairs' formation). Due to these a new 'Para-Magnetic' peculiarity of the normal-to-superconductive (N/S) transition was detected recently in YBaCuO films. It precedes the 'Meissner' ejection and specifies details of. an actually complicated shape of the N/S transition curve. We discuss influence of the currents and magnetic field on the PM effect and relationship between the quality of HTS material and amplitude of the effect. Differences between PM effect and externally close 'paramagnetic Meissner' and resistive 'peak' effects are discussed too.
AB - Because of pick-up coil's flat design, relatively low operation frequency (∼ 23 MHz) and high relative resolution (10-6) a single-layer Open-Flat Coil-based tunnel diode oscillator (OFC-magnetometer) has advantages, compared to other test methods. They become crucial at nondestructive studies with thin flat HTS materials (with small signals), especially near Tc (at start of the 'Cooper' pairs' formation). Due to these a new 'Para-Magnetic' peculiarity of the normal-to-superconductive (N/S) transition was detected recently in YBaCuO films. It precedes the 'Meissner' ejection and specifies details of. an actually complicated shape of the N/S transition curve. We discuss influence of the currents and magnetic field on the PM effect and relationship between the quality of HTS material and amplitude of the effect. Differences between PM effect and externally close 'paramagnetic Meissner' and resistive 'peak' effects are discussed too.
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U2 - 10.1109/TASC.2003.812401
DO - 10.1109/TASC.2003.812401
M3 - Conference article
AN - SCOPUS:0041473418
VL - 13
SP - 3574
EP - 3577
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 2 III
ER -