Contactless transport measurement of metals in pulsed high magnetic fields

Journal Article · Wed Mar 01 00:00:00 EST 1989 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140398· OSTI ID:6481745

Sakakibara, T; Goto, T; Miura, N

A contactless method is developed for high-sensitivity magnetoresistance measurement in pulsed high fields. The resistivity is measured by observing transmission of a radio-frequency field through a thin specimen. The transmission rate is analytically given as a function of the resistivity within the classical skin-effect regime. By use of a high-frequency (0.1--100 MHz), electrical noise coming from pulsed magnetic fields can be rejected effectively and the sensitivity of the measurement is improved by at least a factor of 100 compared with that of a conventional dc four-terminal method. The present method is available for the measurements on superconductors, magnetic metals, and any other materials with short collision time in high magnetic fields. Upper critical fields and magnetoresistance of recent high T/sub c/ superconductors Y-Ba-Cu-O are measured up to 40 T.

• Research Organization: Institute for Solid State Physics, University of Tokyo, Roppongi Minato-ku, Tokyo 106, Japan
• OSTI ID: 6481745
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 60:3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
MAGNETORESISTANCE
COPPER OXIDES
YTTRIUM OXIDES
CRITICAL FIELD
PULSE TECHNIQUES
SENSITIVITY
SKIN EFFECT
SUPERCONDUCTORS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC FIELDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity