Issue |
Europhys. Lett.
Volume 38, Number 8, June II 1997
|
|
---|---|---|
Page(s) | 619 - 624 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1997-00293-9 | |
Published online | 01 September 2002 |
Electronic and nuclear magnetism in PtFex at milli-, and nanokelvin temperatures
1
Physikalisches Institut, Universität Bayreuth - D-95440 Bayreuth, Germany
2
Forschungszentrum Rossendorf - D-01314 Dresden, Germany
Received:
25
November
1996
Accepted:
6
May
1997
Nuclear magnetic resonance, ac susceptibility, and nuclear heat capacity of
Pt samples with different concentrations of magnetic impurities x in the ppm
range have been studied at magnetic fields and at temperatures
.
Spin-lattice and spin-spin relaxation times of
strongly
depend on the impurity content x, and the nuclear heat capacity data show
enhanced values which scale with x at low polarization of the nuclear spin
system. We present a model to describe the heat capacity data with a spatially
varying internal field caused by the magnetic impurities. There is no
indication for a nuclear magnetic ordering of
to a nuclear temperature of
and
an electronic temperature of
.
PACS: 75.30.Hx – Magnetic impurity interactions / 76.60.-k – Nuclear magnetic resonance and relaxation / 75.50.Lk – Spin glasses and other random magnets
© EDP Sciences, 1997
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