Pressure effect investigated with first-order reversal-curve method on the spin-transition compounds [FexZn1−x(btr)2(NCS)2] · H2O (x=0.6,1)

2011 ◽  
Vol 83 (22) ◽  
Author(s):  
Aurelian Rotaru ◽  
Jorge Linares ◽  
François Varret ◽  
Epiphane Codjovi ◽  
Ahmed Slimani ◽  
...  
Keyword(s):  
Pressure Effect ◽  
Spin Transition ◽  
First Order ◽  
Curve Method

scholarly journals Aanalytical Solution for Motion Around Radiated Varying Mass Body

2019 ◽  
Vol 16 ◽  
pp. 8407-8419
Author(s):  
Marwa Abdullah Bin Humaidan ◽  
M. I. El-Saftawy ◽  
H. M. Asiri
Keyword(s):  
Time Series ◽  
Radiation Pressure ◽  
Pressure Effect ◽  
Hamiltonian Function ◽  
Perturbation Techniques ◽  
First Order ◽  
D Operator ◽  
Order Solution ◽  
Delaunay Variables ◽  
Varying Mass

In this work we will add the radiation pressure effect of varying mass body to the model of varying mass Hamiltonian function, including Periastron effect. The problem was formulated in terms of Delaunay variables. The solution of the problem was constructed based on Delava – Hansilmair perturbation techniques. Finally we find the first order solution for the problem as time series by calculating the desired order for the D operator and variables.

First-order reversal curve analysis of spin-transition thermal hysteresis in terms of physical-parameter distributions and their correlations

2005 ◽  
Vol 71 (1) ◽  
Author(s):  
Radu Tanasa ◽  
Cristian Enachescu ◽  
Alexandru Stancu ◽  
Jorge Linares ◽  
Epiphane Codjovi ◽  
...  
Keyword(s):  
Physical Parameter ◽  
Thermal Hysteresis ◽  
Spin Transition ◽  
Curve Analysis ◽  
First Order ◽  
Parameter Distributions

Pressure effect on spontaneous magnetization and first-order magnetization process in the Er2Fe17 single crystal

1999 ◽  
Vol 196-197 ◽  
pp. 701-702 ◽  
Author(s):  
J. Kamarád ◽  
O. Mikulina ◽  
Z. Arnold ◽  
B. Garcia-Landa ◽  
M.R. Ibarra ◽  
...  
Keyword(s):  
Single Crystal ◽  
Pressure Effect ◽  
Spontaneous Magnetization ◽  
Magnetization Process ◽  
First Order

scholarly journals Magnetic Collapse and the Behavior of Transition Metal Oxides: FeO at High Pressures

1997 ◽  
Vol 499 ◽  
Author(s):  
R. E. Cohen ◽  
Y. Fei ◽  
R. Downs ◽  
I. I. Mazin ◽  
D. G. Isaak
Keyword(s):  
Transition Metal Oxides ◽  
High Pressures ◽  
Local Density ◽  
Hexagonal Phase ◽  
Spin Transition ◽  
Generalized Gradient ◽  
Augmented Plane Wave ◽  
First Order ◽  
First Order Transition ◽  
Linearized Augmented Plane Wave

ABSTRACTLinearized augmented plane wave (LAPW) results are presented for FeO at high pressures using the Generalized Gradient Approximation (GGA) to study the high-spin low-spin transition previously predicted by LAPW with the Local Density Approximation (LDA) and Linear Muffin Tin Orbital (LMTO-ASA) methods within the GGA. We find a first-order transition at a pressure of about 105 GPa for the cubic lattice, consistent with earlier LAPW results, but much lower than obtained with the LMTO. The results are generally consistent with recent Mössbauer experiments that show a transition at about 100 GPa. We also discuss the origin of the transition, and show that it is not due to electrostatic crystal-field effects, but is rather due to hybridization and band widening with pressure. Examination of experimental data and computations suggest that the high pressure hexagonal phase of FeO is likely a polytype between the B8 NiAs and anti-B8 AsNi structures. The former is predicted to be an antiferromagnetic metal, and the latter an antiferromagnetic insulator. Implications for geophysics are discussed.

ChemInform Abstract: Extracting Individual Properties from Global Behaviour: First-Order Reversal Curve Method Applied to Magnetic Nanowire Arrays

ChemInform ◽  
2013 ◽  
Vol 44 (43) ◽  
pp. no-no
Author(s):  
Fanny Beron ◽  
Louis-Philippe Carignan ◽  
David Menard ◽  
Arthur Yelon
Keyword(s):  
Nanowire Arrays ◽  
First Order ◽  
Global Behaviour ◽  
Magnetic Nanowire ◽  
Curve Method

scholarly journals Evidence of Photo-Thermal Effects on the First-Order Thermo-Induced Spin Transition of [{Fe(NCSe)(py)2}2(m-bpypz)] Spin-Crossover Material

2019 ◽  
Vol 5 (2) ◽  
pp. 21 ◽  
Author(s):  
Kamel Boukheddaden ◽  
Houcem Fourati ◽  
Yogendra Singh ◽  
Guillaume Chastanet
Keyword(s):  
Thermal Effects ◽  
Spin Crossover ◽  
Evolution Equations ◽  
Thermal Hysteresis ◽  
Magnetic Measurements ◽  
Equations Of Motion ◽  
Spin Transition ◽  
Thermal Bath ◽  
Trapping Region ◽  
First Order

We have investigated by means of optical microscopy and magnetic measurements the first-order thermal spin transition of the [{Fe(NCSe)(py)2}2(m-bpypz)] spin-crossover compound under various shining intensities, far from the light-induced spin-state trapping region. We found evidence of photo-heating effects on the thermally-induced hysteretic response of this spin-crossover material, thus causing the shift of the thermal hysteresis to lower temperature regions. The experimental results are discussed in terms of the apparent crystal temperature and are analyzed theoretically using two evolution equations of motion, written on the high-spin (HS) fraction and heat balance between the crystal and the thermal bath. A very good qualitative agreement was found between experiment and theory in the stationary regime, explaining the experimental observations well and identifying the key factors governing these photo-thermal effects.

Pressure Effect Studies on the High Spin ⇆ Low Spin Transition Behavior Observed in [Fe(II)(bpp)2](NCS)2.2H2O

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Ashis Bhattacharjee ◽  
Masataka Tsugimoto ◽  
Yashuhiro Nakazawa ◽  
Harold A. Goodwin
Keyword(s):  
High Spin ◽  
Pressure Effect ◽  
Spin Transition ◽  
Transition Behavior

Detection of Single-Domain Co2FeAl Nanoparticles Using First-Order Reversal Curve Method

2016 ◽  
Vol 47 (10) ◽  
pp. 5234-5241 ◽  
Author(s):  
Sima Alikhanzadeh-Arani ◽  
Mohammad Almasi-Kashi ◽  
Zahra Pezeshki-Nejad ◽  
Abdolali Ramazani ◽  
Masoud Salavati-Niasari
Keyword(s):  
Single Domain ◽  
First Order ◽  
Curve Method

scholarly journals Probing the A1 to L10 transformation in FeCuPt using the first order reversal curve method

APL Materials ◽  
2014 ◽  
Vol 2 (8) ◽  
pp. 086106 ◽  
Author(s):  
Dustin A. Gilbert ◽  
Jung-Wei Liao ◽  
Liang-Wei Wang ◽  
June W. Lau ◽  
Timothy J. Klemmer ◽  
...  
Keyword(s):  
First Order ◽  
Curve Method
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