Hasan Hamit Yurtseven

E-mail

hamit@metu.edu.tr

Department

Department of Physics

ORCID

0000-0002-7745-6490

Scopus Author ID

9334413200

Web of Science Researcher ID

ABA-9994-2020

Investigation of the complex magnetic behavior of Ni46.86Co2.91Mn38.17Sn12.06(at%) magnetic shape memory alloy at low temperatures Ylldlrlm, Oǧuz; Yuce, Suheyla; Bruno, Nickolaus M; Doǧan, Emel Kilit; Yurtseven, Hasan Hamit; DUMAN, EYÜP; EMRE, ŞİNASİ BARIŞ (2022-08-01) © 2022 IOP Publishing Ltd.The magnetic properties, martensitic transformation characteristics, the magnetic field-induced transformation characteristics, and super spin-glass behaviour at low temperature of Ni46.86Co2.91Mn...
Calculation of the T – X phase diagram of tetradecane + hexadecane and tetradecane + pentadecane under high pressure by the landau mean field theory Tari, O.; Yurtseven, Hasan Hamit (2022-08-01) © 2022 Elsevier B.V.Landau phenomenological model is applied to two binary mixtures (tetradecane + hexadecane and tetradecane + pentadecane) to calculate T−x (temperature - composition) phase diagram under high pressure fo...
Calculation of the phase diagram of n-alkanes (CnH2n+2) by the Landau mean field theory Yurtseven, Hasan Hamit; Kilit Dogan, E. (2022-05-01) We study the temperature T and concentration n (number of carbon atoms) dependence on the transitions of the liquid, rotator (RI, RII,RIII,RIVand RV) and crystal phases in n-alkanes (CnH2n+2). The Landau phenomenological m...
Calculation of the T-X phase diagram for the first-order smectic-hexatic transitions in binary mixtures Kilit Dogan, E.; Yurtseven, Hasan Hamit (2022-04-01) This work gives the T-X phase diagram calculated from the Landau mean field model for the smectic-hexatic transitions in binary mixtures, particularly, in THI-13+THI-17. It is calculated near the SmC-SmF (Hex F)-Hex B trip...
Magnetic transitions in two novel mixed-valence iron(II)–iron(III) metal formate frameworks: Two sublattice model Yurtseven, Hasan Hamit; Tari, O. (2022-03-15) We study the two-sublattice model in the mean field theory by expanding the Gibbs free energy in terms of the magnetizations M1 (Mup) and M2 (Mdown) with the quadratic coupling M12M22 (quadrupolar interactions) for the ord...
Magnetic, thermal and ferroelectric properties of MOFs (MHyM, M = Fe, Mn) close to phase transitions Kilit Dogan, E.; Yurtseven, Hasan Hamit (2021-12-15) Magnetic, thermal and ferroelectric properties of MOFs (metal organic frameworks), in particular, the compounds CH3NH2NH2M(HCOO)3 (MHyM) with M = Fe and Mn, are studied close to phase transitions. For the magnetic properti...
Calculation of the Liquid-Solid Phase Diagram and the Thermodynamic Quantities of the Binary System of Tetradecane and Hexadecane Using the Mean Field Theory Yurtseven, Hasan Hamit; Tari, O. (2021-10-01) The T - x phase diagram of a binary system of tetradecane + hexadecane is calculated using the Landau phenomenological model. Expressions derived for the phase lines are fitted to experimental data from the literature and ...
Landau phenomenological model for the alpha-INC (incommensurate)-beta transition in quartz Yurtseven, Hasan Hamit (2021-08-01) The temperature dependence of the order parameters eta (alpha-phase) and xi (INC - incommensurate phase) are calculated in the presence of the electric field for the alpha-INC-beta transition in quartz by the Landau mean f...
Calculation of the Relaxation Time and the Activation Energy Close to the Lower Phase Transition in Imidazolium Perchlorate Yurtseven, Hasan Hamit (2021-08-01) The temperature dependence of the relaxation time of imidazolium perchlorate (Im-ClO4) was calculated from the pseudospin-phonon coupled (PS) and the energy fluctuation (EF) models close to the first-order phase transition...
Investigation of vibrational, elastic and dielectric properties of cubic gauche nitrogen (cg-N) Akay, Ö.; Yurtseven, Hasan Hamit (2021-06-01) Vibrational, elastic and dielectric properties of the cubic gauche nitrogen (cg-N) are investigated by analyzing the Raman optic and zone-center phonon modes using the literature data. From the pressure dependence of those...

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