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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The intermetallic perovskite MgCNi3 is a superconductor with a Tc=7 K.Substitution of Fe and Ru for Ni decreases Tc monotonically as the dopingconcentration is increased. Here we report thermopower measurements, S(T), onMgCNi3, MgCNi3-xFex and MgCNi3-xRux. For MgCNi3, the thermopower is negative, -12.5 mikroV/K, at 300 K. The absolute value of S decreases as x increases inMgCNi3-xFex and MgCNi3-xRux. The sign of S changes from negative to positive atlow temperatures for values of x > 0.01. These data show that the carriers inMgCNi3 are electrons, and by increasing x and decreasing temperature, theparticipation of hole carriers clearly increases. The influence of the magneticmoments of the Fe atoms on the thermopower is not visible.

The effect of Fe and Ru substitution for Ni on the thermopower in MgCNi_3