Curie temperature behavior in half-metallic ferromagnetic double perovskites within the electronic correlation picture

2018 ◽  
Vol 97 (19) ◽  
Author(s):  
F. Estrada ◽  
E. J. Guzmán ◽  
O. Navarro ◽  
M. Avignon
Keyword(s):  
Curie Temperature ◽  
Temperature Behavior ◽  
Double Perovskites ◽  
Electronic Correlation ◽  
Half Metallic

scholarly journals Increase of Curie temperature with La doping in the double perovskite Sr2-LayFeMoO6 within an electronic correlation approach

2018 ◽  
Vol 64 (2) ◽  
pp. 145
Author(s):  
Francisco Estrada Chávez ◽  
E. J. Guzmán ◽  
Bertha Aguilar ◽  
Oracio Navarro ◽  
Michel Avignon
Keyword(s):  
Curie Temperature ◽  
Density Of States ◽  
Double Exchange ◽  
Double Perovskite ◽  
Expansion Method ◽  
Electronic Correlation ◽  
Half Metallic ◽  
Conduction Electrons ◽  
Ferromagnetic Character

The double perovskite compound Sr2FeMoO6 has a half-metallic ferromagnetic character and ahigh Curie temperature (420 K). Fe-Mo usually present some degree of disorder in either Fe orMo ions, it is therefore fundamental to understand the role of electronic and structural parameterscontrolling the half-metallic character together with a Curie temperature as high as possible. We replaceddivalent Sr2+ by trivalent La3+ ions in Sr2FeMoO6 system to observe the Curie temperaturebehavior. We present an electronic approach using the Green's functions and the renormalizationperturbation expansion method, with localized Fe-spins and conduction Mo-electrons interactingwith the local spins via a double-exchange-type mechanism. We also include the electronic correlationsamong the conduction electrons within a mean-eld approximation. Our results showthe density of states and the Curie temperature behavior when La concentration increases for theSr2y-yLayFeMoO6 system

Enthalpy relaxation and Curie temperature behavior in Fe(Ni,Co)Zr amorphous alloys

1993 ◽  
Vol 152 (2-3) ◽  
pp. 212-218 ◽  
Author(s):  
Tae-Hwan Noh ◽  
Akihisa Inoue ◽  
Hiroyasu Fujimori ◽  
Tsuyoshi Masumoto
Keyword(s):  
Curie Temperature ◽  
Amorphous Alloys ◽  
Enthalpy Relaxation ◽  
Temperature Behavior

Huge magneto-optical effects in half-metallic double perovskites

2004 ◽  
Vol 70 (18) ◽  
Author(s):  
R. Vidya ◽  
P. Ravindran ◽  
A. Kjekshus ◽  
H. Fjellvåg
Keyword(s):  
Double Perovskites ◽  
Half Metallic ◽  
Optical Effects

scholarly journals Inter-grain tunnelling in the half-metallic double-perovskites Sr2BB'O6(BB'= FeMo, FeRe, CrMo, CrW, CrRe)

2014 ◽  
Vol 75 ◽  
pp. 01001 ◽  
Author(s):  
B. Fisher ◽  
J. Genossar ◽  
K. B. Chashka ◽  
L. Patlagan ◽  
G. M. Reisner
Keyword(s):  
Double Perovskites ◽  
Half Metallic

scholarly journals Pressure dependent half-metallic ferromagnetism in inverse Heusler alloy Fe2CoAl: a DFT+U calculations

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 44633-44640
Author(s):  
D. P. Rai ◽  
Lalrinkima ◽  
Lalhriatzuala ◽  
L. A. Fomin ◽  
I. V. Malikov ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Curie Temperature ◽  
First Principles ◽  
Heusler Alloy ◽  
Computational Method ◽  
Half Metallic ◽  
Electronic And Magnetic Properties ◽  
Full Heusler ◽  
Metallic Ferromagnetism ◽  
Half Metallic Ferromagnetism

We report the electronic and magnetic properties along with the Curie temperature (TC) of the inverse full Heusler alloy (HA) Fe2CoAl obtained using the first-principles computational method.

scholarly journals Electronic structure of half-metallic double perovskites

2003 ◽  
Vol 68 (10) ◽  
Author(s):  
Z. Szotek ◽  
W. M. Temmerman ◽  
A. Svane ◽  
L. Petit ◽  
H. Winter
Keyword(s):  
Electronic Structure ◽  
Double Perovskites ◽  
Half Metallic

Room temperature half metallic ferromagnetism due to Os/Ir(5d) in double perovskites

2022 ◽  
Vol 896 ◽  
pp. 163130
Author(s):  
Qasim Mahmood ◽  
Ghazanfar Nazir ◽  
Sonia Bouzgarrou ◽  
M.S. Rashid ◽  
Eman Algrafy ◽  
...  
Keyword(s):  
Room Temperature ◽  
Double Perovskites ◽  
Half Metallic ◽  
Metallic Ferromagnetism ◽  
Half Metallic Ferromagnetism

scholarly journals Theory of half-metallic double perovskites. II. Effective spin Hamiltonian and disorder effects

2013 ◽  
Vol 87 (16) ◽  
Author(s):  
Onur Erten ◽  
O. Nganba Meetei ◽  
Anamitra Mukherjee ◽  
Mohit Randeria ◽  
Nandini Trivedi ◽  
...  
Keyword(s):  
Double Perovskites ◽  
Spin Hamiltonian ◽  
Effective Spin ◽  
Half Metallic ◽  
Disorder Effects
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