CobaltMaghrebV1, PascalFrancis, Corpus, bibRecord, 000106

Spin wave relaxation and magnetic properties in [M/Cu] super-lattices; M = Fe, Co and Ni

Identifieur interne : 000106 ( PascalFrancis/Corpus ); précédent : 000105; suivant : 000107

Spin wave relaxation and magnetic properties in [M/Cu] super-lattices; M = Fe, Co and Ni

Auteurs : A. Fahmi ; A. Qachaou

Source :

Physica. B, Condensed matter [ 0921-4526 ] ; 2009.

RBID : Pascal:09-0353414

Descripteurs français

Pascal (Inist)
- Onde spin, Hamiltonien spin, Excitation élémentaire, Modèle Heisenberg, Interaction échange, Interaction dipolaire, Effet surface, Relaxation onde, Cuivre, Fer, Nickel, Matériau ferromagnétique, Cobalt, Superréseau.

English descriptors

KwdEn :
- Cobalt, Copper, Dipole interactions, Elementary excitation, Exchange interactions, Ferromagnetic materials, Heisenberg model, Iron, Nickel, Spin Hamiltonians, Spin waves, Superlattices, Surface effect, Wave relaxation.

Abstract

In this work, we study the elementary excitations and magnetic properties of the [M/Cu] super-lattices with: M ₌ Fe, Co and Ni, represented by a Heisenberg ferromagnetic system with N atomic planes. The nearest neighbour (NN), next nearest neighbour (NNN) exchange, dipolar interactions and surface anisotropy effects are taken into account and the Hamiltonian is studied in the framework of the linear spin wave theory. In the presence of the exchange alone, the excitation spectrum E(k) and the magnetization z>/S analytical expressions are obtained using the Green's function formalism. The obtained relaxation time of the magnon populations is nearly the same in the Fe and Co-based super-lattices, while these magnetic excitations would last much longer in the Ni-based super lattice. A numerical study of the surface anisotropy and long-ranged dipolar interaction combined effects are also reported. The exchange integral values deduced from a comparison with experience for the three super-lattices are coherent.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

A01	`01`	`1`		`@0 0921-4526`
A03		`1`		`@0 Physica, B Condens. matter`
A05				`@2 404`
A06				`@2 16`
A08	`01`	`1`	`ENG`	`@1 Spin wave relaxation and magnetic properties in [M/Cu] super-lattices; M ₌ Fe, Co and Ni`
A11	`01`	`1`		`@1 FAHMI (A.)`
A11	`02`	`1`		`@1 QACHAOU (A.)`
A14	`01`			`@1 Department de Physique, Laboratoire de Physique de la matière condensée, Faculté des sciences, B.P133-14 @2 000 Kenitra @3 MAR @Z 1 aut. @Z 2 aut.`
A20				`@1 2474-2480`
A21				`@1 2009`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 145B @5 354000172512170710`
A44				`@0 0000 @1 © 2009 INIST-CNRS. All rights reserved.`
A45				`@0 22 ref.`
A47	`01`	`1`		`@0 09-0353414`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Physica. B, Condensed matter`
A66	`01`			`@0 NLD`
C01	`01`		`ENG`	@0 In this work, we study the elementary excitations and magnetic properties of the [M/Cu] super-lattices with: M ₌ Fe, Co and Ni, represented by a Heisenberg ferromagnetic system with N atomic planes. The nearest neighbour (NN), next nearest neighbour (NNN) exchange, dipolar interactions and surface anisotropy effects are taken into account and the Hamiltonian is studied in the framework of the linear spin wave theory. In the presence of the exchange alone, the excitation spectrum E(k) and the magnetization <S^z>/S analytical expressions are obtained using the Green's function formalism. The obtained relaxation time of the magnon populations is nearly the same in the Fe and Co-based super-lattices, while these magnetic excitations would last much longer in the Ni-based super lattice. A numerical study of the surface anisotropy and long-ranged dipolar interaction combined effects are also reported. The exchange integral values deduced from a comparison with experience for the three super-lattices are coherent.
C02	`01`	`3`		`@0 001B70E70C`
C03	`01`	`3`	`FRE`	`@0 Onde spin @5 02`
C03	`01`	`3`	`ENG`	`@0 Spin waves @5 02`
C03	`02`	`3`	`FRE`	`@0 Hamiltonien spin @5 03`
C03	`02`	`3`	`ENG`	`@0 Spin Hamiltonians @5 03`
C03	`03`	`X`	`FRE`	`@0 Excitation élémentaire @5 06`
C03	`03`	`X`	`ENG`	`@0 Elementary excitation @5 06`
C03	`03`	`X`	`SPA`	`@0 Excitación elemental @5 06`
C03	`04`	`3`	`FRE`	`@0 Modèle Heisenberg @5 07`
C03	`04`	`3`	`ENG`	`@0 Heisenberg model @5 07`
C03	`05`	`3`	`FRE`	`@0 Interaction échange @5 08`
C03	`05`	`3`	`ENG`	`@0 Exchange interactions @5 08`
C03	`06`	`3`	`FRE`	`@0 Interaction dipolaire @5 09`
C03	`06`	`3`	`ENG`	`@0 Dipole interactions @5 09`
C03	`07`	`X`	`FRE`	`@0 Effet surface @5 10`
C03	`07`	`X`	`ENG`	`@0 Surface effect @5 10`
C03	`07`	`X`	`SPA`	`@0 Efecto superficie @5 10`
C03	`08`	`X`	`FRE`	`@0 Relaxation onde @5 11`
C03	`08`	`X`	`ENG`	`@0 Wave relaxation @5 11`
C03	`08`	`X`	`SPA`	`@0 Relajación onda @5 11`
C03	`09`	`3`	`FRE`	`@0 Cuivre @2 NC @5 15`
C03	`09`	`3`	`ENG`	`@0 Copper @2 NC @5 15`
C03	`10`	`3`	`FRE`	`@0 Fer @2 NC @5 16`
C03	`10`	`3`	`ENG`	`@0 Iron @2 NC @5 16`
C03	`11`	`3`	`FRE`	`@0 Nickel @2 NC @5 17`
C03	`11`	`3`	`ENG`	`@0 Nickel @2 NC @5 17`
C03	`12`	`3`	`FRE`	`@0 Matériau ferromagnétique @5 18`
C03	`12`	`3`	`ENG`	`@0 Ferromagnetic materials @5 18`
C03	`13`	`3`	`FRE`	`@0 Cobalt @2 NC @5 19`
C03	`13`	`3`	`ENG`	`@0 Cobalt @2 NC @5 19`
C03	`14`	`3`	`FRE`	`@0 Superréseau @5 20`
C03	`14`	`3`	`ENG`	`@0 Superlattices @5 20`
N21				`@1 257`

Format Inist (serveur)

NO :	PASCAL 09-0353414 INIST
ET :	Spin wave relaxation and magnetic properties in [M/Cu] super-lattices; M ₌ Fe, Co and Ni
AU :	FAHMI (A.); QACHAOU (A.)
AF :	Department de Physique, Laboratoire de Physique de la matière condensée, Faculté des sciences, B.P133-14/000 Kenitra/Maroc (1 aut., 2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Physica. B, Condensed matter; ISSN 0921-4526; Pays-Bas; Da. 2009; Vol. 404; No. 16; Pp. 2474-2480; Bibl. 22 ref.
LA :	Anglais
EA :	In this work, we study the elementary excitations and magnetic properties of the [M/Cu] super-lattices with: M ₌ Fe, Co and Ni, represented by a Heisenberg ferromagnetic system with N atomic planes. The nearest neighbour (NN), next nearest neighbour (NNN) exchange, dipolar interactions and surface anisotropy effects are taken into account and the Hamiltonian is studied in the framework of the linear spin wave theory. In the presence of the exchange alone, the excitation spectrum E(k) and the magnetization <S^z>/S analytical expressions are obtained using the Green's function formalism. The obtained relaxation time of the magnon populations is nearly the same in the Fe and Co-based super-lattices, while these magnetic excitations would last much longer in the Ni-based super lattice. A numerical study of the surface anisotropy and long-ranged dipolar interaction combined effects are also reported. The exchange integral values deduced from a comparison with experience for the three super-lattices are coherent.
CC :	001B70E70C
FD :	Onde spin; Hamiltonien spin; Excitation élémentaire; Modèle Heisenberg; Interaction échange; Interaction dipolaire; Effet surface; Relaxation onde; Cuivre; Fer; Nickel; Matériau ferromagnétique; Cobalt; Superréseau
ED :	Spin waves; Spin Hamiltonians; Elementary excitation; Heisenberg model; Exchange interactions; Dipole interactions; Surface effect; Wave relaxation; Copper; Iron; Nickel; Ferromagnetic materials; Cobalt; Superlattices
SD :	Excitación elemental; Efecto superficie; Relajación onda
LO :	INIST-145B.354000172512170710
ID :	09-0353414

Links to Exploration step

Pascal:09-0353414

Le document en format XML

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 Fe, Co and Ni</title>
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 Fe, Co and Ni</title>
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<term>Ferromagnetic materials</term>
<term>Heisenberg model</term>
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<front><div type="abstract" xml:lang="en">In this work, we study the elementary excitations and magnetic properties of the [M/Cu] super-lattices with: M <sub>=</sub>
 Fe, Co and Ni, represented by a Heisenberg ferromagnetic system with N atomic planes. The nearest neighbour (NN), next nearest neighbour (NNN) exchange, dipolar interactions and surface anisotropy effects are taken into account and the Hamiltonian is studied in the framework of the linear spin wave theory. In the presence of the exchange alone, the excitation spectrum E(k) and the magnetization <sup>z</sup>
>/S analytical expressions are obtained using the Green's function formalism. The obtained relaxation time of the magnon populations is nearly the same in the Fe and Co-based super-lattices, while these magnetic excitations would last much longer in the Ni-based super lattice. A numerical study of the surface anisotropy and long-ranged dipolar interaction combined effects are also reported. The exchange integral values deduced from a comparison with experience for the three super-lattices are coherent.</div>
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<fC01 i1="01" l="ENG"><s0>In this work, we study the elementary excitations and magnetic properties of the [M/Cu] super-lattices with: M <sub>=</sub>
 Fe, Co and Ni, represented by a Heisenberg ferromagnetic system with N atomic planes. The nearest neighbour (NN), next nearest neighbour (NNN) exchange, dipolar interactions and surface anisotropy effects are taken into account and the Hamiltonian is studied in the framework of the linear spin wave theory. In the presence of the exchange alone, the excitation spectrum E(k) and the magnetization <sup>z</sup>
>/S analytical expressions are obtained using the Green's function formalism. The obtained relaxation time of the magnon populations is nearly the same in the Fe and Co-based super-lattices, while these magnetic excitations would last much longer in the Ni-based super lattice. A numerical study of the surface anisotropy and long-ranged dipolar interaction combined effects are also reported. The exchange integral values deduced from a comparison with experience for the three super-lattices are coherent.</s0>
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<fC02 i1="01" i2="3"><s0>001B70E70C</s0>
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<fC03 i1="01" i2="3" l="FRE"><s0>Onde spin</s0>
<s5>02</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Spin waves</s0>
<s5>02</s5>
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<s5>03</s5>
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<fC03 i1="02" i2="3" l="ENG"><s0>Spin Hamiltonians</s0>
<s5>03</s5>
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<s5>06</s5>
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<s5>06</s5>
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<s5>06</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Modèle Heisenberg</s0>
<s5>07</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Heisenberg model</s0>
<s5>07</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Interaction échange</s0>
<s5>08</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Exchange interactions</s0>
<s5>08</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE"><s0>Interaction dipolaire</s0>
<s5>09</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG"><s0>Dipole interactions</s0>
<s5>09</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Effet surface</s0>
<s5>10</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Surface effect</s0>
<s5>10</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Efecto superficie</s0>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Relaxation onde</s0>
<s5>11</s5>
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<s5>11</s5>
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<s5>11</s5>
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<s2>NC</s2>
<s5>15</s5>
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<s2>NC</s2>
<s5>15</s5>
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<fC03 i1="10" i2="3" l="FRE"><s0>Fer</s0>
<s2>NC</s2>
<s5>16</s5>
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<s2>NC</s2>
<s5>16</s5>
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<fC03 i1="11" i2="3" l="FRE"><s0>Nickel</s0>
<s2>NC</s2>
<s5>17</s5>
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<fC03 i1="11" i2="3" l="ENG"><s0>Nickel</s0>
<s2>NC</s2>
<s5>17</s5>
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<fC03 i1="12" i2="3" l="FRE"><s0>Matériau ferromagnétique</s0>
<s5>18</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Ferromagnetic materials</s0>
<s5>18</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>19</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>19</s5>
</fC03>
<fC03 i1="14" i2="3" l="FRE"><s0>Superréseau</s0>
<s5>20</s5>
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<server><NO>PASCAL 09-0353414 INIST</NO>
<ET>Spin wave relaxation and magnetic properties in [M/Cu] super-lattices; M <sub>=</sub>
 Fe, Co and Ni</ET>
<AU>FAHMI (A.); QACHAOU (A.)</AU>
<AF>Department de Physique, Laboratoire de Physique de la matière condensée, Faculté des sciences, B.P133-14/000 Kenitra/Maroc (1 aut., 2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Physica. B, Condensed matter; ISSN 0921-4526; Pays-Bas; Da. 2009; Vol. 404; No. 16; Pp. 2474-2480; Bibl. 22 ref.</SO>
<LA>Anglais</LA>
<EA>In this work, we study the elementary excitations and magnetic properties of the [M/Cu] super-lattices with: M <sub>=</sub>
 Fe, Co and Ni, represented by a Heisenberg ferromagnetic system with N atomic planes. The nearest neighbour (NN), next nearest neighbour (NNN) exchange, dipolar interactions and surface anisotropy effects are taken into account and the Hamiltonian is studied in the framework of the linear spin wave theory. In the presence of the exchange alone, the excitation spectrum E(k) and the magnetization <sup>z</sup>
>/S analytical expressions are obtained using the Green's function formalism. The obtained relaxation time of the magnon populations is nearly the same in the Fe and Co-based super-lattices, while these magnetic excitations would last much longer in the Ni-based super lattice. A numerical study of the surface anisotropy and long-ranged dipolar interaction combined effects are also reported. The exchange integral values deduced from a comparison with experience for the three super-lattices are coherent.</EA>

<CC>001B70E70C</CC>

<FD>Onde spin; Hamiltonien spin; Excitation élémentaire; Modèle Heisenberg; Interaction échange; Interaction dipolaire; Effet surface; Relaxation onde; Cuivre; Fer; Nickel; Matériau ferromagnétique; Cobalt; Superréseau</FD>

<ED>Spin waves; Spin Hamiltonians; Elementary excitation; Heisenberg model; Exchange interactions; Dipole interactions; Surface effect; Wave relaxation; Copper; Iron; Nickel; Ferromagnetic materials; Cobalt; Superlattices</ED>

<SD>Excitación elemental; Efecto superficie; Relajación onda</SD>

<LO>INIST-145B.354000172512170710</LO>

<ID>09-0353414</ID>

</server>

Serveur d'exploration sur le cobalt au Maghreb

Spin wave relaxation and magnetic properties in [M/Cu] super-lattices; M = Fe, Co and Ni

Spin wave relaxation and magnetic properties in [M/Cu] super-lattices; M = Fe, Co and Ni

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