1 Ocak 2019 Dergi makalesi Açık Erişim

Ozdemir, I; Kadioglu, Y.; Akturk, O. Uzengi; Yuksel, Y.; Akinci, U.; Akturk, E.

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    <subfield code="a">A new single-layer structure of MBene family: Ti2B</subfield>
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    <subfield code="a">In this manuscript, we have carried out a combined study of density functional theory and Monte Carlo (MC) simulations for a thorough examination of a single-layer (SL) Ti2B structure. On the basis of first-principles, spin-polarized density functional calculations, we showed that a free standing SL-Ti2B structure is dynamically and thermally stable. The atomic structure, phonon spectrum, electronic and magnetic properties of the SL-Ti2B structure are analyzed. In order to determine ground state, the structure of Ti2B is optimized for four types of spin oriented configurations, namely ferromagnetic (FM), antiferromagnetic Neel, antiferromagnetic Zigzag and antiferromagnetic Stripy and non-magnetic states. We found that the spin configuration FM corresponds to the ground state for SL-Ti2B. We also found that the Raman-active modes are softening in the antiferromagnetic cases. On the basis of these results, MC simulations show that the magnetic susceptibility, thermal variations of magnetization, and specific heat curves of Ti2B exhibit a phase transition between paramagnetic and FM phases at the Curie temperature of 39.06 K. While SL-Ti2B possess a little out-of-plane magnetic anisotropy, it has not any in plane magnetic anisotropy energy.</subfield>
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    <subfield code="u">Adnan Menderes Univ, Dept Phys, TR-09100 Aydin, Turkey</subfield>
    <subfield code="a">Kadioglu, Y.</subfield>
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    <subfield code="u">Dokuz Eylul Univ, Fac Sci, Phys Dept, Tinaztepe Campus, TR-35390 Izmir, Turkey</subfield>
    <subfield code="a">Yuksel, Y.</subfield>
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    <subfield code="u">Adnan Menderes Univ, Dept Phys, TR-09100 Aydin, Turkey</subfield>
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