MAGNETIC MICROSCOPE BASED ON YBCO BICRYSTAL THIN-FILM DC SQUID OPERATING AT 77-K

被引：12

作者：

GUDOSHNIKOV, SA ^{[1
]}

VENGRUS, II ^{[1
]}

ANDREEV, KE ^{[1
]}

SNIGIREV, OV ^{[1
]}

机构：

[1] MOSCOW MV LOMONOSOV STATE UNIV,DEPT PHYS,MOSCOW 119899,RUSSIA

来源：

CRYOGENICS | 1994年 / 34卷

关键词：

D O I：

10.1016/S0011-2275(05)80208-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We have developed two versions of magnetic flux microscope which use an YBCO thin film bicrystal de SQUID to image the two-dimensional distribution of magnetic field. With the size of the inner hole of the SQUID close to 30 mu m a spatial resolution of about 200 mu m and a field of view 3x4 mm(2) have been obtained. The equivalent magnetic field noise in the SQUID ranges from 100 pT/Hz-(1/2) at 1 Hz to 10 pT/Hz-(1/2) at 100 Hz. We have employed the microscope to image 50 mu A 110 Hz ac currents flowing in the thin parallel wires.

引用

页码：883 / 886

页数：4

共 4 条

[1] MAGNETIC MICROSCOPY USING A LIQUID-NITROGEN COOLED YBA2CU3O7 SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE [J].

BLACK, RC ;

MATHAI, A ;

WELLSTOOD, FC ;

DANTSKER, E ;

MIKLICH, AH ;

NEMETH, DT ;

KINGSTON, JJ ;

CLARKE, J .

APPLIED PHYSICS LETTERS, 1993, 62 (17) :2128-2130

[2] HIGH RESOLUTION MAGNETIC MICROSCOPY USING A dc SQUID [J].

Mathai, A. ;

Song, D. ;

Gim, Y. ;

Wellstood, F. C. .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) :2609-2612

[3]

VENGRUS II, 1993, RUSSIAN PHYS, V6, P1730

[4] IMAGING OF MAGNETIC VORTICES IN SUPERCONDUCTING NETWORKS AND CLUSTERS BY SCANNING SQUID MICROSCOPY [J].

VU, LN ;

WISTROM, MS ;

VANHARLINGEN, DJ .

APPLIED PHYSICS LETTERS, 1993, 63 (12) :1693-1695

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