Investigation of structural, electronic, magnetic and lattice dynamical properties for XCoBi (X: Ti, Zr, Hf) Half-Heusler compounds
     
Yazarlar (5)
Gökhan Sürücü
Middle East Technical University (Metu), Türkiye
Mehmet Işık
Atilim University, Türkiye
Prof. Dr. Abdullah CANDAN Kırşehir Ahi Evran Üniversitesi, Türkiye
Xiaotian Wang
Southwest University, Çin
Hasan Hüseyin Güllü
Atilim University, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physica B Condensed Matter
Dergi ISSN 0921-4526 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 06-2020
Cilt / Sayı / Sayfa 587 / 1 / 412146–0 DOI 10.1016/j.physb.2020.412146
Makale Linki https://hdl.handle.net/11511/56754
Özet
Structural, electronic, magnetic, mechanical and lattice dynamical properties of XCoBi (X: Ti, Zr, Hf) Half-Heusler compounds have been investigated according to density functional theory and generalized gradient approximation. Among alpha, beta and gamma structural phases, gamma-phase structure has been found as the most stability characteristics depending on the calculated formation enthalpies, energy-volume dependencies and Cauchy pressures. Energy-volume plots of possible magnetic orders of gamma-phase XCoBi compounds have been analyzed and the most stable order has been found as paramagnetic nature. The theoretical studies on gamma-phase structures resulted in band gap energies of 0.96, 0.99 and 0.98 eV for TiCoBi, ZrCoBi and HfCoBi semiconducting compounds, respectively. Born-Huang criteria applied on elastic constants of interest compounds has indicated that gamma-phase is also mechanically stable for all studied compounds. In addition, various mechanical, lattice dynamical and thermodynamical parameters of XCoBi compounds have been calculated in the present study.
Anahtar Kelimeler
Half-Heusler, First principles, Electronic structures, Phonon