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Journal of Superconductivity and Novel Magnetism

, Volume 31, Issue 10, pp 3183–3192 | Cite as

Structural, Elastic, Thermodynamic, Electronic, and Magnetic Investigations of Full-Heusler Compound Ag2CeAl: FP-LAPW Method

  • Friha Khelfaoui
  • Mohammed Ameri
  • Djillali Bensaid
  • Ibrahim Ameri
  • Yarub Al-Douri
Original Paper
First Online:
Received:
Accepted:

Abstract

Structural, elastic, thermodynamic, electronic, and magnetic properties of the full-Heusler compound Ag2CeAl were determined using generalized gradient approximation with exchange-correlation functional GGA (PBEsol) with spin-orbit coupling (SOC) correction. The elastic modulus and their pressure dependence are calculated. From the elastic parameter behavior, it is inferred that this compound is elastically stable and ductile in nature. Through the quasi-harmonic Debye model, in which the phononic effect is considered the effect of pressure P (0 to 50) and temperature T (0 to 1000) on the lattice constant, the elastic parameters, bulk modulus B, heat capacity and thermal expansion α, internal energy U, entropy S, Debye temperature 𝜃D, Helmholtz free energy A, and Gibbs free energy G are investigated. The thermodynamic properties show that the compound Ag2CeAl is a heavy fermion material. The density of state (DOS), magnetic momentum, and band structure are computed, to investigate the magnetic and metallic characteristics. The calculated polarization of the compound is 77.34%. The obtained results are the first predictions of the physical properties for the rare-earth-based (Ce) full-Heusler Ag2CeAl.

Keywords

Full-Heusler alloys Magnetic properties First-principles calculations Spin-polarized electronic bands 
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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Friha Khelfaoui
    • 1
    • 2
  • Mohammed Ameri
    • 1
    • 3
  • Djillali Bensaid
    • 1
    • 4
  • Ibrahim Ameri
    • 3
  • Yarub Al-Douri
    • 3
  1. 1.Laboratory Physico-Chemistry of Advanced MaterialsUniversity of Djillali LiabesSidi Bel AbbèsAlgeria
  2. 2.Faculty of Sciences, Department of PhysicsDr. Tahar Moulay University of SaidaSaidaAlgeria
  3. 3.Physics Department, Faculty of ScienceUniversity of Sidi-Bel-AbbesSidi Bel AbbèsAlgeria
  4. 4.Institute of Science and TechnologyUniversity BELHADJ BouchaibAin-TemouchentAlgeria

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