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Author Thompson, J. R. ♦ Ossandon, J. G. ♦ Christen, D. K. ♦ Paranthaman, M. ♦ Specht, E. D. ♦ Kim, Y. C.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ HIGH-TC SUPERCONDUCTORS ♦ MAGNETIZATION ♦ MEISSNER-OCHSENFELD EFFECT ♦ MERCURY OXIDES ♦ COPPER OXIDES ♦ BARIUM OXIDES ♦ CALCIUM OXIDES ♦ MIXED STATE ♦ MAGNETIC SUSCEPTIBILITY ♦ CRITICAL FIELD ♦ COMPARATIVE EVALUATIONS
Abstract The equilibrium magnetization was studied in magnetically aligned Hg-based cuprate superconductors with a crystal structure containing one, two, and three adjacent Cu-O layers. The mixed state magnetization was measured with the magnetic field applied perpendicular to the layers, along with low field Meissner effect and normal state susceptibility studies for volume correction factors. The internally consistent analysis is used to identify systematics as the number {open_quote}{open_quote}{ital n}{close_quote}{close_quote} of Cu-O layers increases. The study reveals a linear increase in the slope of upper critical field {minus}{ital dH}{sub {ital c}2}/{ital dT} with {open_quote}{open_quote}{ital n}{close_quote}{close_quote}. Most importantly, we find a nearly constant carrier doping per Cu-O layer. This result is compared with other studies, e.g., Rietveld analysis of neutron diffractometry, and its implications are discussed. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-09-01
Publisher Department Oak Ridge National Laboratory
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 10
Organization Oak Ridge National Laboratory


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