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Browsing Ortak Dersler Bölümü by Author "Yurtseven, Hamit"

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Damping Constant (Linewidth) and the Relaxation Time of the Brillouin LA Mode for the Ferroelectric-Paraelectric Transition in PbZr1-xTixO3

Yurtseven, Hamit; Kiracı, Ali (IEEE-INST Electrical Electronics Engineers INC, 2016-10)

The damping constant (linewidth) of the longitudinal acoustic (LA) mode is calculated as a function of temperature using the observed Brillouin frequencies of this mode from the literature for the ferroelectric-paraelectric ...
Order-disorder transition in the ferroelectric LiTaO3

Kiracı, Ali; Yurtseven, Hamit (2019-10-26)

The temperature dependences of the damping constant and the relaxation time are calculated by using the Raman frequencies of a* and the lowest A(1) (TO) phonons in the ferroelectric phase close to the ferroelectric-paraelectric ...
Phenomenological approaches on the Nd3+ doped ferroelectric LaBGeO5

Kara, N.; Kiracı, Ali; Yurtseven, Hamit (2021)

Two phenomenological models, namely the compressible Ising model and Landau model, have been used to analyze the specific heat and the dielectric constant data, respectively for the pure and Nd3+ doped LaBGeO5 (LBG) crystals. ...
Pressure dependence of the Raman frequency calculated from the volume data close to the ferroelectric-paraelectric transition in PbTiO3

Yurtseven, Hamit; Kiracı, Ali (Taylor&Francis, 2017)

We calculate the pressure dependence of the Raman frequencies of some Raman modes by using the observed volume data through the mode Gruneisen parameters for the ferroelectri-paraelectric transition in PbTiO3. The mode ...
Pressure-dependent Raman modes near the cubic-tetragonal transition in strontium titanate

Kiracı, Ali; Yurtseven, Hamit (Wiley, 2018-03)

The pressure dependence of the Raman frequency shifts of various Raman modes is calculated at room temperature using the volume data from the literature for the cubic-tetragonal transition in SrTiO3. The isothermal mode ...

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Browsing Ortak Dersler Bölümü by Author "Yurtseven, Hamit"

Browsing Ortak Dersler Bölümü by Author "Yurtseven, Hamit"

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