Ferromagnetic transition in ordered double perovskites and related alloys

E. Carvajal; O. Navarro; R. Allub; M. Avignon; B. Alascio

doi:10.1140/epjb/e2005-00386-9

Ferromagnetic transition in ordered double perovskites and related alloys

E. Carvajal, O. Navarro, R. Allub, M. Avignon, B. Alascio

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

We study the electronic and magnetic properties of ordered perovskites Sr ₂FeMO₆ (where M is a transition metal), among which some compounds, like Sr₂FeMoO₆ are half-metallic with high Curie temperature while Sr₂FeWO₆ is an antiferromagnetic insulator. Using a double exchange type model with an interaction between localized spins and conduction electrons together with a tight-binding Hamiltonian and the renormalized perturbation expansion method, we study the behavior of T_c as a function of the number of conduction electrons and also as a function of the Fe-M energy difference. We also consider the Sr₂FeMo_xW_1-xO₆ compounds which present a magnetic and metal-insulator transition as a function of doping.

Original language	English
Pages (from-to)	179-187
Number of pages	9
Journal	European Physical Journal B
Volume	48
Issue number	2
DOIs	https://doi.org/10.1140/epjb/e2005-00386-9
State	Published - Nov 2005
Externally published	Yes

Access to Document

10.1140/epjb/e2005-00386-9

Cite this

@article{990193c6fa9441158989106a9814c950,

title = "Ferromagnetic transition in ordered double perovskites and related alloys",

abstract = "We study the electronic and magnetic properties of ordered perovskites Sr 2FeMO6 (where M is a transition metal), among which some compounds, like Sr2FeMoO6 are half-metallic with high Curie temperature while Sr2FeWO6 is an antiferromagnetic insulator. Using a double exchange type model with an interaction between localized spins and conduction electrons together with a tight-binding Hamiltonian and the renormalized perturbation expansion method, we study the behavior of Tc as a function of the number of conduction electrons and also as a function of the Fe-M energy difference. We also consider the Sr2FeMoxW1-xO6 compounds which present a magnetic and metal-insulator transition as a function of doping.",

author = "E. Carvajal and O. Navarro and R. Allub and M. Avignon and B. Alascio",

year = "2005",

month = nov,

doi = "10.1140/epjb/e2005-00386-9",

language = "Ingl{\'e}s",

volume = "48",

pages = "179--187",

journal = "European Physical Journal B",

issn = "1434-6028",

number = "2",

}

TY - JOUR

T1 - Ferromagnetic transition in ordered double perovskites and related alloys

AU - Carvajal, E.

AU - Navarro, O.

AU - Allub, R.

AU - Avignon, M.

AU - Alascio, B.

PY - 2005/11

Y1 - 2005/11

N2 - We study the electronic and magnetic properties of ordered perovskites Sr 2FeMO6 (where M is a transition metal), among which some compounds, like Sr2FeMoO6 are half-metallic with high Curie temperature while Sr2FeWO6 is an antiferromagnetic insulator. Using a double exchange type model with an interaction between localized spins and conduction electrons together with a tight-binding Hamiltonian and the renormalized perturbation expansion method, we study the behavior of Tc as a function of the number of conduction electrons and also as a function of the Fe-M energy difference. We also consider the Sr2FeMoxW1-xO6 compounds which present a magnetic and metal-insulator transition as a function of doping.

AB - We study the electronic and magnetic properties of ordered perovskites Sr 2FeMO6 (where M is a transition metal), among which some compounds, like Sr2FeMoO6 are half-metallic with high Curie temperature while Sr2FeWO6 is an antiferromagnetic insulator. Using a double exchange type model with an interaction between localized spins and conduction electrons together with a tight-binding Hamiltonian and the renormalized perturbation expansion method, we study the behavior of Tc as a function of the number of conduction electrons and also as a function of the Fe-M energy difference. We also consider the Sr2FeMoxW1-xO6 compounds which present a magnetic and metal-insulator transition as a function of doping.

UR - http://www.scopus.com/inward/record.url?scp=29144532515&partnerID=8YFLogxK

U2 - 10.1140/epjb/e2005-00386-9

DO - 10.1140/epjb/e2005-00386-9

M3 - Artículo

SN - 1434-6028

VL - 48

SP - 179

EP - 187

JO - European Physical Journal B

JF - European Physical Journal B

IS - 2

ER -

Ferromagnetic transition in ordered double perovskites and related alloys

Abstract

Access to Document

Other files and links

Fingerprint

Cite this