Analysis of the Thermal Expansivity Near the Tricritical Point in Dilute Chromium Alloys

Date

2015-08-27

Author

Yurtseven, Hasan Hamit

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

119
views

0
downloads

Chromium (Cr) undergoes a first order Neel transition as an antiferromagnetic material. When V, Mo and Mn atoms are substituted in the Cr lattice, a weak first order Neel transition in pure Cr changes toward a second order transition and a possible tricritical point in CrV occurs close to 0.2 at % V, as observed experimentally from the measurements of the thermal expansivity at various temperatures. In this study, we analyze the experimental data for the thermal expansivity from the literature as a function of temperature using the power - law formula for Cr alloys (Cr - 0.1V, 0.2V, 0.5V and Cr - 0.1Mn, Cr - 0.2Mo, 0.3Mo, 0.4Mo). Our results are interpreted near the tricritical point in dilute chromium alloys.

Subject Keywords

At-Percent-V, Critical scattering, Antiferromagnetism, Temperature, Dependence, Cr+0.2

URI

https://hdl.handle.net/11511/38227

DOI

https://doi.org/10.1063/1.4944176

Collections

Department of Physics, Conference / Seminar

Suggestions

OpenMETU
Core

Analysis of the Raman intensities near the phase transitions in ammonium halides Yurtseven, Hasan Hamit (Elsevier BV, 2008-12-01) This study concentrates on the temperature dependence of the Raman intensities for the lattice modes in ammonium halides (NH4Cl and NH4Br) close to phase transitions, We predict their intensities using the results of a shell model for the Raman polarizability within the framework of an Ising pseudospin-phonon coupled model.
Investigation of the effect of alumina binder addition to Pd/SO42− − ZrO2 Catalysts during sol−gel synthesis Sinha Majumdar, Sreshtha; Çelik, Gökhan; Ozkan, Umit (2016-01-01) We have incorporated alumina into palladium catalysts supported on sulfated zirconia (Pd/SZ) during sol-gel synthesis for application in a washcoat for NOx emissions control in natural gas-fired lean-burn engines. In situ incorporation of the adhesivity-enhancing binder, alumina, during the sol-gel synthesis of the Pd/SZ catalyst demonstrated significantly improved NOx reduction activity of the previously reported dual-catalyst bed when compared to the conventional ex situ mode of binder addition in a slurr...
Characterization of cross-coupling in capacitive micromachined ultrasonic transducers Bayram, Barış; Yaralioglu, GG; Oralkan, O; Lin, DS; Zhuang, XF; Ergun, AS; Sarioglu, AF; Wong, SH; Khuri-Yakub, BT (2005-01-01) This paper analyzes element-to-element and cell-to-cell cross-coupling in capacitive micromachined ultrasonic transducers (cMUTs) using an interferometer. In a 1-D linear cMUT array immersed in oil, a single element was excited, and membrane displacements were measured at different positions along the array with an interferometer. Electrical measurements of the received voltage on each array element were also performed simultaneously to verify the optical measurements. The array was then covered with a poly...
Study of asymmetric aldol and Mannich reactions catalyzed by proline-thiourea host-guest complexes in nonpolar solvents Demir, Ayhan Sıtkı; BAŞÇEKEN, SİNAN (Elsevier BV, 2013-04-30) A proline-thiourea host-guest complex has been described as a good catalyst for asymmetric reactions such as aldol and Mannich reactions. High stereoselectivities were obtained under optimal conditions. Thiourea was observed to have an important effect on the reactivity and selectivity, even in an unconventional nonpolar reaction medium and without the need to utilize low temperatures. This proline-thiourea host-guest system has the ability to participate in a hydrogen bonding network.
Modelling of quasi-periodic oscillations with wave packets Alpar, MA; Yilmaz, A (1997-01-01) Model dispersion relations are introduced to explore power spectra of the normal-branch (NB) and horizontal-branch (HB) quasi-periodic oscillations (QPOs; for reviews see Van der Klis (1989)[ARA&A, 27, 517], (1992) [Proc. of NATO ASI X-Ray Binaries and Recycled Pulsars, eds. E.P.J. Van den Heuvel & S.A. Rappaport, Kluwer, Dordrecht], (1995)[Proc, of NATO ASI The Lives of the Neutron Stars, eds. M.A. Alpar, Omit Kiziloglu, & J. van Paradijs, Kluwer, Dordrecht]) of low mass X-ray binaries (LMXBs) in terms of ...

Citation Formats

H. H. Yurtseven, “Analysis of the Thermal Expansivity Near the Tricritical Point in Dilute Chromium Alloys,” 2015, vol. 1722, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38227.