Analysis of the Magnetization as a Function of the Magnetic Field at the Transition Temperature for La0.6Nd0.4Mn2Si2

Date

2015-03-01

Author

Yurtseven, Hasan Hamit
Emre, B.
Acet, M.

Metadata

Show full item record

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

Item Usage Stats

75
views

0
downloads

We analyze in this study our experimental data for the magnetization (M) as a function of the magnetic field (H) at various constant temperatures for the multilayer structure of La Nd-0.6 Mn-0.4 Si-2 (2) close to the ferromagnetic-antiferromagnetic transitions. This analysis is performed at the transition temperatures (T (c)) for the M vs. H- H (c) (H (c) is the critical field) according to a power-law formula above and below H (c), and the values of the critical isotherm delta are deduced for La Nd-0.6 Mn-0.4 Si-2 (2). We also calculate the magnetic field (H- H (c)) dependence of the isothermal susceptibility chi (T) at constant temperatures above and below H (c), and we obtain the critical behaviour of chi (T) for this multilayer structure. Our delta values indicate that the ferromagnetic-antiferromagnetic transition in La Nd-0.6 Mn-0.4 Si-2 (2) changes its character from a first order (discontinuous) toward a second-order (continuous) one as the constant temperature changes.

Subject Keywords

Magnetization, Isothermal susceptibility, Ferromagnetic-antiferromagnetic transitions, La0.6Nd0.4Mn2Si2, RMN2GE2 COMPOUNDS, MN, BEHAVIOR

URI

https://hdl.handle.net/11511/38060

Journal

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM

DOI

https://doi.org/10.1007/s10948-014-2697-7

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Analysis of the frequency shifts close to the second order phase transition in NH4Cl Yurtseven, Hasan Hamit (2001-03-01) In this study we analyzed observed Raman data for the frequencies of the disorder-induced modes of v(7) (93 cm(-1)) and vs (144 cm(-1)) in the second order phase region of NH4Cl (P = 2.8 kbar). By means of a power-law formula describing the critical behaviour of the frequency shifts 1/v(partial derivativev/partial derivativeT)p for those phonon modes studied, we extract the critical exponent value of a = 0.25, which can also describe the critical behaviour of the specific hear Cp close to the second order p...
Analysis of the Critical Magnetic Field and the Dielectric Susceptibility for the Smectic A-Smectic C* Transition in DOBAMBC Yurtseven, Hasan Hamit (2015-01-01) The temperature dependences of the critical magnetic field H-c and the dielectric susceptibility x(at constant magnetic fields) are analyzed close to the smectic Asmectic C* transition in DOBAMBC using the experimental data according to a power-law formula. These analyses are performed below T-c in the smectic C* phase. Values of the critical exponent delta for the critical magnetic field are determined in a given temperature interval (Tc-T) with increasing and decreasing H-c. Also, values of the critical e...
Analysis of the susceptibility of condensed oxygen under high pressures and in strong magnetic fields Doğan, Ezgi; Yurtseven, Hasan Hamit (2017-03-05) The temperature dependence of the magnetic susceptibility is analyzed at some constant pressures by a power-law formula using the experimental data from the literature for the alpha - beta and beta - gamma transitions in oxygen. A weak discontinuous (nearly continuous) transition occurring from the a to the beta phase, becomes more discontinuous (weakly first order) for the beta - gamma transition as observed experimentally, which can be explained in terms of the critical exponents deduced from our analysis.
Analysis of the IR-Raman Modes and the Heat Capacity Near the α-Inc-β Transitions in Quartz Günay, E.; Yurtseven, Hasan Hamit; Karacali, H.; Ateş, S. (2021-01-01) This study gives our analysis for the temperature dependence of the infrared frequency and the integrated intensity of the 695 cm−1 mode near the α–β transition at 847.5 K and the temperature dependence of the Raman scattering cross section of the 355 cm−1 mode near the β-INC (incommensurate) transition which occurs within a small temperature (∼1.3 K) interval in relation to the order parameter in quartz. Both analyses are performed according to a power–law formula for the order parameter (Formula presented...
Analysis of Transient Laminar Forced Convection of Nanofluids in Circular Channels Sert, İsmail Ozan; Sezer Uzol, Nilay; Güvenç Yazıcıoğlu, Almıla; Kakaç, Sadık (2012-11-15) In this study, forced convection heat transfer Characteristics of nanofluids are investigated by numerical analysis of incompressible transient laminar flow in a circular duct under step change in wall temperature and wall heat flux. The thermal responses of the system are obtained by solving energy equation under both transient and steady-state conditions for hydrodynamically fully developed flow. In the analyses, temperature dependent thermo-physical properties are also considered. In the numerical analys...

Citation Formats

H. H. Yurtseven, B. Emre, and M. Acet, “Analysis of the Magnetization as a Function of the Magnetic Field at the Transition Temperature for La0.6Nd0.4Mn2Si2,” JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, pp. 873–876, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38060.