Effect of oxygen on the Mn-Co ferromagnetic coupling
Identifieur interne :
000081 ( PascalFrancis/Curation );
précédent :
000080;
suivant :
000082
Effect of oxygen on the Mn-Co ferromagnetic coupling
Auteurs : Stepan Pick [
République tchèque] ;
Claude Demangeat [
France]
Source :
-
Catalysis today [ 0920-5861 ] ; 2004.
RBID : Pascal:04-0237128
Descripteurs français
English descriptors
Abstract
The paper describes the study of the effect of oxidation on the magnetic coupling between Mn and Co atoms in ultrathin Mn films deposited on fcc Co(0 0 1). The magnetic map has been investigated through tight-binding linear-muffin-tin scheme within generalized gradient approximation of the density functional. The calculations indicate that oxygen tends to destabilize the ferromagnetic Mn-Co coupling in favour of an antiferromagnetic coupling found by experiment when oxygen is added. Nevertheless, the (1 x 1) structures observed do not seem to be the most stable ones. We speculate that a disordered oxidized Mn-rich MnCo surface alloy might explain the experimental findings.
| pA |
| A01 | 01 | 1 | | @0 0920-5861 |
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| A02 | 01 | | | @0 CATTEA |
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| A03 | | 1 | | @0 Catal. today |
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| A05 | | | | @2 89 |
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| A06 | | | | @2 3 |
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| A08 | 01 | 1 | ENG | @1 Effect of oxygen on the Mn-Co ferromagnetic coupling |
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| A09 | 01 | 1 | ENG | @1 Emerging Materials |
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| A11 | 01 | 1 | | @1 PICK (Stepan) |
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| A11 | 02 | 1 | | @1 DEMANGEAT (Claude) |
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| A12 | 01 | 1 | | @1 GARIN (François) @9 ed. |
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| A12 | 02 | 1 | | @1 PARLEBAS (Jean-Claude) @9 ed. |
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| A12 | 03 | 1 | | @1 MINOT (Christian) @9 ed. |
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| A12 | 04 | 1 | | @1 GUEMMAZ (Mohamed) @9 ed. |
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| A14 | 01 | | | @1 Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3 @2 182 23 Prague @3 CZE @Z 1 aut. |
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| A14 | 02 | | | @1 Institut de Physique et de Chimie des Matériaux de Strasbourg, 23 Rue du Loess @2 67037 Strasbourg @3 FRA @Z 2 aut. |
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| A15 | 01 | | | @1 Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC), UMR 7515-CNRS-ECPM-ULP, 25 rue Becquerel @2 67087 Strasbourg @3 FRA @Z 1 aut. |
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| A15 | 02 | | | @1 Institut de physique et Chimie des Matériaux (IPCMS), Université Louis Pasteur, UMR 7504 du CNRS, 23 rue du Loess, BP 43 @2 67034 Strasbourg @3 FRA @Z 2 aut. |
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| A15 | 03 | | | @1 Laboratoire de Chimie Théorique, Boîte 137, UPMC @2 75252 Paris @3 FRA @Z 3 aut. |
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| A15 | 04 | | | @1 Faculté des Sciences, Université Ferhat Abbas @2 19000 Sétif @3 DZA @Z 4 aut. |
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| A18 | 01 | 1 | | @1 Ferhat Abbas University of Setif @2 19000 Setif @3 DZA @9 patr. |
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| A20 | | | | @1 369-374 |
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| A21 | | | | @1 2004 |
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| A23 | 01 | | | @0 ENG |
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| A43 | 01 | | | @1 INIST @2 21357 @5 354000116771020170 |
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| A44 | | | | @0 0000 @1 © 2004 INIST-CNRS. All rights reserved. |
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| A45 | | | | @0 31 ref. |
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| A47 | 01 | 1 | | @0 04-0237128 |
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| A60 | | | | @1 P @2 C |
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| A61 | | | | @0 A |
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| A64 | 01 | 1 | | @0 Catalysis today |
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| A66 | 01 | | | @0 NLD |
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| C01 | 01 | | ENG | @0 The paper describes the study of the effect of oxidation on the magnetic coupling between Mn and Co atoms in ultrathin Mn films deposited on fcc Co(0 0 1). The magnetic map has been investigated through tight-binding linear-muffin-tin scheme within generalized gradient approximation of the density functional. The calculations indicate that oxygen tends to destabilize the ferromagnetic Mn-Co coupling in favour of an antiferromagnetic coupling found by experiment when oxygen is added. Nevertheless, the (1 x 1) structures observed do not seem to be the most stable ones. We speculate that a disordered oxidized Mn-rich MnCo surface alloy might explain the experimental findings. |
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| C02 | 01 | X | | @0 001C01A03 |
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| C03 | 01 | X | FRE | @0 Effet oxygène @5 01 |
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| C03 | 01 | X | ENG | @0 Oxygen effect @5 01 |
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| C03 | 01 | X | SPA | @0 Efecto oxígeno @5 01 |
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| C03 | 02 | X | FRE | @0 Fonctionnelle densité @5 02 |
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| C03 | 02 | X | ENG | @0 Density functional @5 02 |
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| C03 | 02 | X | SPA | @0 Funciónal densidad @5 02 |
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| C03 | 03 | X | FRE | @0 Calcul @5 03 |
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| C03 | 03 | X | ENG | @0 Calculation @5 03 |
|---|
| C03 | 03 | X | SPA | @0 Cálculo @5 03 |
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| C03 | 04 | X | FRE | @0 Film @5 04 |
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| C03 | 04 | X | ENG | @0 Film @5 04 |
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| C03 | 04 | X | SPA | @0 Película @5 04 |
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| C03 | 05 | X | FRE | @0 Oxygène @2 NC @2 FX @5 05 |
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| C03 | 05 | X | ENG | @0 Oxygen @2 NC @2 FX @5 05 |
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| C03 | 05 | X | SPA | @0 Oxígeno @2 NC @2 FX @5 05 |
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| C03 | 06 | X | FRE | @0 Chimisorption @5 06 |
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| C03 | 06 | X | ENG | @0 Chemisorption @5 06 |
|---|
| C03 | 06 | X | SPA | @0 Adsorción química @5 06 |
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| C03 | 07 | X | FRE | @0 Cobalt @2 NC @5 07 |
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| C03 | 07 | X | ENG | @0 Cobalt @2 NC @5 07 |
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| C03 | 07 | X | SPA | @0 Cobalto @2 NC @5 07 |
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| C03 | 08 | X | FRE | @0 Manganèse @2 NC @5 08 |
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| C03 | 08 | X | ENG | @0 Manganese @2 NC @5 08 |
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| C03 | 08 | X | SPA | @0 Manganeso @2 NC @5 08 |
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| N21 | | | | @1 152 |
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| N82 | | | | @1 OTO |
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|
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| pR |
| A30 | 01 | 1 | ENG | @1 French-Algerian Scientific Congress @2 1 @3 Tamanrasset DZA @4 2003-02-22 |
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|
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Le document en format XML
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</keywords><front><div type="abstract" xml:lang="en">The paper describes the study of the effect of oxidation on the magnetic coupling between Mn and Co atoms in ultrathin Mn films deposited on fcc Co(0 0 1). The magnetic map has been investigated through tight-binding linear-muffin-tin scheme within generalized gradient approximation of the density functional. The calculations indicate that oxygen tends to destabilize the ferromagnetic Mn-Co coupling in favour of an antiferromagnetic coupling found by experiment when oxygen is added. Nevertheless, the (1 x 1) structures observed do not seem to be the most stable ones. We speculate that a disordered oxidized Mn-rich MnCo surface alloy might explain the experimental findings.</div>
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</fA11><fA12 i1="01" i2="1"><s1>GARIN (François)</s1>
<s9>ed.</s9>
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<s9>ed.</s9>
</fA12><fA12 i1="03" i2="1"><s1>MINOT (Christian)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="04" i2="1"><s1>GUEMMAZ (Mohamed)</s1>
<s9>ed.</s9>
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<s2>182 23 Prague</s2>
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<sZ>1 aut.</sZ>
</fA14><fA14 i1="02"><s1>Institut de Physique et de Chimie des Matériaux de Strasbourg, 23 Rue du Loess</s1>
<s2>67037 Strasbourg</s2>
<s3>FRA</s3>
<sZ>2 aut.</sZ>
</fA14><fA15 i1="01"><s1>Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC), UMR 7515-CNRS-ECPM-ULP, 25 rue Becquerel</s1>
<s2>67087 Strasbourg</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
</fA15><fA15 i1="02"><s1>Institut de physique et Chimie des Matériaux (IPCMS), Université Louis Pasteur, UMR 7504 du CNRS, 23 rue du Loess, BP 43</s1>
<s2>67034 Strasbourg</s2>
<s3>FRA</s3>
<sZ>2 aut.</sZ>
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<s2>75252 Paris</s2>
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<sZ>3 aut.</sZ>
</fA15><fA15 i1="04"><s1>Faculté des Sciences, Université Ferhat Abbas</s1>
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<s3>DZA</s3>
<sZ>4 aut.</sZ>
</fA15><fA18 i1="01" i2="1"><s1>Ferhat Abbas University of Setif</s1>
<s2>19000 Setif</s2>
<s3>DZA</s3>
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</fA21><fA23 i1="01"><s0>ENG</s0>
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<s2>21357</s2>
<s5>354000116771020170</s5>
</fA43><fA44><s0>0000</s0>
<s1>© 2004 INIST-CNRS. All rights reserved.</s1>
</fA44><fA45><s0>31 ref.</s0>
</fA45><fA47 i1="01" i2="1"><s0>04-0237128</s0>
</fA47><fA60><s1>P</s1>
<s2>C</s2>
</fA60><fA64 i1="01" i2="1"><s0>Catalysis today</s0>
</fA64><fA66 i1="01"><s0>NLD</s0>
</fA66><fC01 i1="01" l="ENG"><s0>The paper describes the study of the effect of oxidation on the magnetic coupling between Mn and Co atoms in ultrathin Mn films deposited on fcc Co(0 0 1). The magnetic map has been investigated through tight-binding linear-muffin-tin scheme within generalized gradient approximation of the density functional. The calculations indicate that oxygen tends to destabilize the ferromagnetic Mn-Co coupling in favour of an antiferromagnetic coupling found by experiment when oxygen is added. Nevertheless, the (1 x 1) structures observed do not seem to be the most stable ones. We speculate that a disordered oxidized Mn-rich MnCo surface alloy might explain the experimental findings.</s0>
</fC01><fC02 i1="01" i2="X"><s0>001C01A03</s0>
</fC02><fC03 i1="01" i2="X" l="FRE"><s0>Effet oxygène</s0>
<s5>01</s5>
</fC03><fC03 i1="01" i2="X" l="ENG"><s0>Oxygen effect</s0>
<s5>01</s5>
</fC03><fC03 i1="01" i2="X" l="SPA"><s0>Efecto oxígeno</s0>
<s5>01</s5>
</fC03><fC03 i1="02" i2="X" l="FRE"><s0>Fonctionnelle densité</s0>
<s5>02</s5>
</fC03><fC03 i1="02" i2="X" l="ENG"><s0>Density functional</s0>
<s5>02</s5>
</fC03><fC03 i1="02" i2="X" l="SPA"><s0>Funciónal densidad</s0>
<s5>02</s5>
</fC03><fC03 i1="03" i2="X" l="FRE"><s0>Calcul</s0>
<s5>03</s5>
</fC03><fC03 i1="03" i2="X" l="ENG"><s0>Calculation</s0>
<s5>03</s5>
</fC03><fC03 i1="03" i2="X" l="SPA"><s0>Cálculo</s0>
<s5>03</s5>
</fC03><fC03 i1="04" i2="X" l="FRE"><s0>Film</s0>
<s5>04</s5>
</fC03><fC03 i1="04" i2="X" l="ENG"><s0>Film</s0>
<s5>04</s5>
</fC03><fC03 i1="04" i2="X" l="SPA"><s0>Película</s0>
<s5>04</s5>
</fC03><fC03 i1="05" i2="X" l="FRE"><s0>Oxygène</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>05</s5>
</fC03><fC03 i1="05" i2="X" l="ENG"><s0>Oxygen</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>05</s5>
</fC03><fC03 i1="05" i2="X" l="SPA"><s0>Oxígeno</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>05</s5>
</fC03><fC03 i1="06" i2="X" l="FRE"><s0>Chimisorption</s0>
<s5>06</s5>
</fC03><fC03 i1="06" i2="X" l="ENG"><s0>Chemisorption</s0>
<s5>06</s5>
</fC03><fC03 i1="06" i2="X" l="SPA"><s0>Adsorción química</s0>
<s5>06</s5>
</fC03><fC03 i1="07" i2="X" l="FRE"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>07</s5>
</fC03><fC03 i1="07" i2="X" l="ENG"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>07</s5>
</fC03><fC03 i1="07" i2="X" l="SPA"><s0>Cobalto</s0>
<s2>NC</s2>
<s5>07</s5>
</fC03><fC03 i1="08" i2="X" l="FRE"><s0>Manganèse</s0>
<s2>NC</s2>
<s5>08</s5>
</fC03><fC03 i1="08" i2="X" l="ENG"><s0>Manganese</s0>
<s2>NC</s2>
<s5>08</s5>
</fC03><fC03 i1="08" i2="X" l="SPA"><s0>Manganeso</s0>
<s2>NC</s2>
<s5>08</s5>
</fC03><fN21><s1>152</s1>
</fN21><fN82><s1>OTO</s1>
</fN82><pR><fA30 i1="01" i2="1" l="ENG"><s1>French-Algerian Scientific Congress</s1>
<s2>1</s2>
<s3>Tamanrasset DZA</s3>
<s4>2003-02-22</s4>
</fA30>
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