English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Employing a broadband microwave reflection configuration, we have measuredthe complex surface impedance, $Z_S(\omega,T)$, of single crystalLa$_{0.8}$Sr$_{0.2}$MnO$_3$, as a function of frequency (0.045-45 GHz) andtemperature (250-325 K). Through the dependence of the microwave surfaceimpedance on the magnetic permeability, $\hat\mu(\omega,T)$, we have studiedthe local magnetic behavior of this material, and have extracted thespontaneous magnetization, $M_0(T)$, in {\em zero applied field}. The broadbandnature of these measurements and the fact that no external field is applied tothe material provide a unique opportunity to analyze the critical behavior ofthe spontaneous magnetization at temperatures very close to the ferromagneticphase transition. We find a Curie temperature $T_C=305.5\pm 0.5$ K and scalingexponent $\beta=0.45\pm 0.05$, in agreement with the prediction of mean-fieldtheory. We also discuss other recent determinations of the magnetizationcritical exponent in this and similar materials and show why our results aremore definitive.Comment: 4 pages; 3 figures included with epsfig; to be published in Phys.  Rev. B Rapid Communication

physical review. b, condensed matter

Determination of the magnetization scaling exponent for single-crystal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>0.8</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>0.2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">MnO</mml…

Determination of the magnetization scaling exponent for single-crystalLa0.8Sr0.2MnO