Parimagnetism in HoCo2 and TmCo2.
Identifieur interne : 000824 ( Ncbi/Checkpoint ); précédent : 000823; suivant : 000825Parimagnetism in HoCo2 and TmCo2.
Auteurs : C M Bonilla [Espagne] ; J. Herrero-Albillos ; A I Figueroa ; C. Castán-Guerrero ; J. Bartolomé ; I. Calvo-Almazán ; D. Schmitz ; E. Weschke ; L M García ; F. BartoloméSource :
- Journal of physics. Condensed matter : an Institute of Physics journal [ 1361-648X ] ; 2014.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Carbon Dioxide, Holmium, Thulium.
- chemistry : Magnets.
- Circular Dichroism, Computer Simulation, Magnetic Fields, Models, Chemical, Signal Processing, Computer-Assisted, Temperature, X-Rays.
Abstract
X-ray magnetic circular dichroism (XMCD), longitudinal (χac) and transverse (TS) ac magnetic susceptibility have been measured in the RCo2 series (R = Ho, and Tm) as a function of temperature and applied magnetic field. We show that parimagnetism is a general behavior among the RCo2 ferrimagnetic series (R being a heavy rare-earth ion). XMCD results supply evidence of the presence of two compensation temperatures above Tc, defining two different parimagnetic configurations, which is a fully unexpected result. The inverse χ'ac curve exhibits a small anomaly which vanishes under low applied magnetic fields. The combination of TS and XMCD measurements allows one to depict new magnetic phase diagrams for these compounds of the RCo2 series. A new scenario allowing one to understand the observed phenomenology as a Griffiths phase-like behavior is proposed, where the amorphous RCo2 represents the undiluted system case.
DOI: 10.1088/0953-8984/26/15/156001
PubMed: 24675016
Affiliations:
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We show that parimagnetism is a general behavior among the RCo2 ferrimagnetic series (R being a heavy rare-earth ion). XMCD results supply evidence of the presence of two compensation temperatures above Tc, defining two different parimagnetic configurations, which is a fully unexpected result. The inverse χ'ac curve exhibits a small anomaly which vanishes under low applied magnetic fields. The combination of TS and XMCD measurements allows one to depict new magnetic phase diagrams for these compounds of the RCo2 series. A new scenario allowing one to understand the observed phenomenology as a Griffiths phase-like behavior is proposed, where the amorphous RCo2 represents the undiluted system case.</div></front></TEI><affiliations><list><country><li>Espagne</li></country><region><li>Aragon (communauté autonome)</li></region><settlement><li>Saragosse</li></settlement><orgName><li>Université de Saragosse</li></orgName></list><tree><noCountry><name sortKey="Bartolome, F" sort="Bartolome, F" uniqKey="Bartolome F" first="F" last="Bartolomé">F. Bartolomé</name><name sortKey="Bartolome, J" sort="Bartolome, J" uniqKey="Bartolome J" first="J" last="Bartolomé">J. Bartolomé</name><name sortKey="Calvo Almazan, I" sort="Calvo Almazan, I" uniqKey="Calvo Almazan I" first="I" last="Calvo-Almazán">I. Calvo-Almazán</name><name sortKey="Castan Guerrero, C" sort="Castan Guerrero, C" uniqKey="Castan Guerrero C" first="C" last="Castán-Guerrero">C. Castán-Guerrero</name><name sortKey="Figueroa, A I" sort="Figueroa, A I" uniqKey="Figueroa A" first="A I" last="Figueroa">A I Figueroa</name><name sortKey="Garcia, L M" sort="Garcia, L M" uniqKey="Garcia L" first="L M" last="García">L M García</name><name sortKey="Herrero Albillos, J" sort="Herrero Albillos, J" uniqKey="Herrero Albillos J" first="J" last="Herrero-Albillos">J. Herrero-Albillos</name><name sortKey="Schmitz, D" sort="Schmitz, D" uniqKey="Schmitz D" first="D" last="Schmitz">D. Schmitz</name><name sortKey="Weschke, E" sort="Weschke, E" uniqKey="Weschke E" first="E" last="Weschke">E. Weschke</name></noCountry><country name="Espagne"><region name="Aragon (communauté autonome)"><name sortKey="Bonilla, C M" sort="Bonilla, C M" uniqKey="Bonilla C" first="C M" last="Bonilla">C M Bonilla</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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