Identification of Magnetic Phases in Natural Ochres by Mossbauer Spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10439552" target="_blank" >RIV/00216208:11320/20:10439552 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/20:00342529
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Q6hK4kxXeX" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Q6hK4kxXeX</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.12693/APhysPolA.137.667" target="_blank" >10.12693/APhysPolA.137.667</a>
Alternative languages
Result language
angličtina
Original language name
Identification of Magnetic Phases in Natural Ochres by Mossbauer Spectroscopy
Original language description
The Mossbauer spectroscopy is one of the few analytical techniques that provide information on the investigated system both from the viewpoint of its structural arrangement and also magnetic order. Here, we demonstrate how 57 Fe Mossbauer spectroscopy can contribute to identification of magnetic phases in rather ordinary Fe-containing materials like natural ochres. Fe-ochre precipitates were collected at an abandoned antimony deposit in East Slovakia. Three sets of samples were studied: (i) as-collected, (ii) ochres sterilized at 95 degrees C for 30 min, and (iii) Fe-ochre precipitates which were exposed to fungal bioleaching after sterilization. The Mossbauer spectra from all three batches were recorded at 300, 80, and 5 K. Presence of magnetic phases was revealed only at the lowest temperature. At higher temperatures, all samples show significant relaxation of magnetic moments which indicates that the crystalline grains are very small and exhibit superparamagnetic behaviour.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Physica Polonica A
ISSN
0587-4246
e-ISSN
—
Volume of the periodical
137
Issue of the periodical within the volume
5
Country of publishing house
PL - POLAND
Number of pages
3
Pages from-to
667-669
UT code for WoS article
000558676100027
EID of the result in the Scopus database
2-s2.0-85090148441