Quantitative determination of the remanent magnetization in ceramic YBa2Cu3O7by detection of the second harmonic susceptibility−a new memory effect

Autor:	Ch. Neumann, Th. Ritzi, Paul J. Ziemann, Ch. Heinzel
Rok vydání:	1992
Předmět:	Superconductivity High-temperature superconductivity Physics and Astronomy (miscellaneous) Condensed matter physics Chemistry Magnetometer Second-harmonic generation Magnetic flux law.invention Magnetization law Remanence Condensed Matter::Superconductivity Harmonic
Zdroj:	Applied Physics Letters. 60:2297-2299
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.107009
Popis:	A new ac technique based on the nonlinear magnetic response of sintered YBaCuO material is introduced to determine quantitatively the zero‐field‐cooled and field‐cooled remanent magnetization of this high Tc superconductor. It is demonstrated that by applying a dc‐compensation field Hcomp, the signal of the second harmonic susceptibility of this material can be minimized. Comparison to the results obtained by dc‐magnetization measurements (SQUID magnetometer) on identical samples show, that Hcomp is proportional to the corresponding dc remanence. Thus, Hcomp provides a measure to exploit this ‘‘memory’’ effect of the second harmonic.
Databáze:	OpenAIRE
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