Statistical Mechanical Determination of nanocluster size distributions in the phase coexistence region of a first order phase transition from the isotherms of DMPC monolayers at the air-water interface

2021 ◽  
Author(s):  
Eiji Hatta ◽  
Ko Nihei
Keyword(s):  
Surface Pressure ◽  
Size Distributions ◽  
Coexistence Region ◽  
First Order ◽  
First Order Phase Transition ◽  
Air Water Interface ◽  
Pressure Area ◽  
Statistical Mechanical ◽  
First Order Phase

A statistical mechanical deconvolution procedure for the experimentally measured surface pressure –area isotherms has been presented to obtain the surface pressure dependence of the liquid expanded (LE) and liquid condensed...

Inorganic mixed phase templated by a fatty acid monolayer at the air–water interface: the Mn and Mg case

2018 ◽  
Vol 20 (9) ◽  
pp. 6629-6637 ◽  
Author(s):  
Alae El Haitami ◽  
Michel Goldmann ◽  
Philippe Fontaine ◽  
Marie-Claude Fauré ◽  
Sophie Cantin
Keyword(s):  
Grazing Incidence ◽  
Water Interface ◽  
X Ray Diffraction ◽  
Inorganic Layer ◽  
X Ray ◽  
First Order ◽  
First Order Phase Transition ◽  
Air Water Interface ◽  
First Order Phase

A first-order phase transition with a peculiar feature is evidenced by means of in situ grazing incidence X-ray diffraction in the 2D organic phase-mediated nucleation of an inorganic layer.

Magnetic Anisotropy Constants of Epitaxial (110) Fe/GaAs Films from 77k To 293k Studied by Magneto-Resistance

1989 ◽  
Vol 151 ◽  
Author(s):  
Daniel K. Lottis ◽  
G. A. Prinz ◽  
E. Dan Dahlberg
Keyword(s):  
Phase Transition ◽  
Uniaxial Anisotropy ◽  
Epitaxial Films ◽  
Effective Anisotropy ◽  
First Order ◽  
First Order Phase Transition ◽  
Gaas Films ◽  
First Order Phase ◽  
Magneto Resistance

ABSTRACTA first-order phase transition in the magnetization of Fe films, driven by an applied magnetic field, was first reported by Hathaway and Prinz [1]. Further studies were performed on this phase transition using anisotropic magnetoresistance measurements by Riggs and Dahlberg [2]. Here we report the extension of these studies to include temperatures between 77K and 293K. Emphasis is on a determination of the fourth-order and uniaxial anisotropy constants (K1 and Ku). It is shown that the temperature dependence of the anisotropy energies in these films varies with thickness, which may be useful in sorting out the origin and magnitude of different contributions to the total effective anisotropy. The present study suggests that similar studies of (110) iron on other substrates might contribute to achieving a better understanding of in-plane anisotropies in epitaxial films.

WEIGHT RATIO FIXING AT FIRST ORDER PHASE TRANSITIONS

1992 ◽  
Vol 03 (05) ◽  
pp. 1109-1117
Author(s):  
THOMAS LIPPERT ◽  
KLAUS SCHILLING ◽  
PEER UEBERHOLZ ◽  
GYAN BHANOT
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Weight Ratio ◽  
Phenomenological Method ◽  
Reliable Determination ◽  
First Order ◽  
First Order Phase Transition ◽  
Two Phases ◽  
First Order Phase

The presence of strong metastabilities in computer simulations of models showing a first order phase transition hinders a reliable determination of the weight ratio between the two phases. We discuss a new phenomenological method which allows an accurate fixing of the weight ratio using the standard multihistogram procedure.

Determination of the low-temperature structure of hexamethylbenzene

2005 ◽  
Vol 61 (2) ◽  
pp. 200-206 ◽  
Author(s):  
John A. Stride
Keyword(s):  
Low Temperature ◽  
Temperature Phase ◽  
Temperature Structure ◽  
Thermally Induced ◽  
First Order ◽  
Neutron Powder Diffraction Data ◽  
First Order Phase Transition ◽  
First Order Phase

The low-temperature structure of hexamethylbenzene has been determined from neutron powder diffraction data and found to differ from the room-temperature phase predominantly by a translation of molecular planes to a form a cubic close-packed type structure. By performing measurements as a function of temperature, the role of thermally induced agitation of the molecular units in the first-order phase transition is clearly demonstrated.

SOLITONS AND BUBBLES IN MODELS WITH CHERN-SIMONS TERM

1992 ◽  
Vol 07 (34) ◽  
pp. 3245-3254
Author(s):  
L. MASPERI
Keyword(s):  
Complex Scalar ◽  
Relativistic Limit ◽  
First Order ◽  
String Type ◽  
First Order Phase Transition ◽  
Symmetry Phase ◽  
Complex Scalar Field ◽  
First Order Phase ◽  
Chern Simons

It is shown that a gauge theory for complex scalar field with up to sextic self-interactions and a Chern-Simons term in 2+1 dimensions has solitons which may become bubbles of the stable broken-symmetry phase in a medium of the symmetric one producing the first order phase transition. In the non-relativistic limit scale invariance prevents the determination of an optimal bubble size. Possible extensions to 3 + 1 dimensions of bubbles of string type are indicated.

Direct Access to the Order Parameter: Parameterized Symmetry Modes and Rigid Body Movements as a Function of Temperature

2010 ◽  
Vol 651 ◽  
pp. 79-95 ◽  
Author(s):  
Melanie Müller ◽  
Robert E. Dinnebier ◽  
Naveed Z. Ali ◽  
Branton J. Campbell ◽  
Martin Jansen
Keyword(s):  
Lattice Strain ◽  
Landau Theory ◽  
Direct Access ◽  
High Symmetry ◽  
First Order ◽  
Synchrotron Powder Diffraction ◽  
First Order Phase Transition ◽  
Alternative Approaches ◽  
First Order Phase

The first order phase transition of CsFeO2 was investigated using synchrotron powder diffraction data as a function of temperature. Two alternative approaches were used to describe the deviation of the framework crystal structure relative to the high-symmetry parent structure: symmetry (a.k.a. distortion) modes and polyhedral-tilt parameters. In both cases, the relevant parameters were refined as a function of temperature using the method of parametric Rietveld refinement. We demonstrate a semi-automated and generally applicable method for the determination of spontaneous lattice strain variations, order parameters and power-law exponents as derived from Landau theory.

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