Low-temperature study of magnetic properties of two-dimensional (2d) classical square Heisenberg lattices

2012 ◽  
Author(s):  
Jacques Curely
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Two Dimensional ◽  
Temperature Study

J-aggregate structures in crystals of three bisazomethine dyes

2004 ◽  
Vol 219 (4) ◽  
Author(s):  
Shinya Matsumoto ◽  
Kazuko Shirai ◽  
Kimiko Kobayashi ◽  
Tatsuo Wada ◽  
Motoo Shiro
Keyword(s):  
Low Temperature ◽  
Crystal Structures ◽  
Two Dimensional ◽  
Bond Lengths ◽  
Temperature Study ◽  
Characteristic Two ◽  
J Aggregates ◽  
Aggregate Structures ◽  
Deposited Films

AbstractThe crystal structures of three bisazomethine dyes, which form J-aggregates in vapor-deposited films, were investigated. The characteristic two-dimensional arrangement of molecules proposed for J-aggregates was recognized in crystals of all three dyes. The observation of unusual bond lengths in one of the dyes at 298 K was resolved by a low temperature study,

Low-temperature magnetic properties of a two-dimensional spin nematic state

1991 ◽  
Vol 3 (19) ◽  
pp. 3353-3366 ◽  
Author(s):  
A A Nersesyan ◽  
G I Japaridze ◽  
I G Kimeridze
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Two Dimensional ◽  
Nematic State

scholarly journals Exploration of magnetism in 3D and 2D systems

2019 ◽  
Author(s):  
◽  
Ashutosh Dahal
Keyword(s):  
Phase Transition ◽  
Magnetic Properties ◽  
Low Temperature ◽  
Data Storage ◽  
Measurement Techniques ◽  
Honeycomb Lattice ◽  
Synthesis Methods ◽  
Detailed Knowledge ◽  
Two Dimensional ◽  
Magnetic Fluctuations

Magnetism has intruded in every aspect of our life, from electric motors to hard disk data storage to space technologies. Developing strong understanding of underlying magnetic properties is of utmost importance to reach new frontiers of technological advancement. During my Ph.D. research, I have explored complementary research venues in three dimensional as well as two dimensional materials to understand basic magnetic properties that were either not known or explored for the first time. In this quest, I have studied three different physical systems with overlapping structural and/or magnetic and electrical properties: nickel monosilicides (NiSi), cobalt-doped calcium ruthenate (Ca(CoxRu1-x)O3) and europium manganese arsenide (EuMn2As2). One of the key aspects of my research is to understand how magnetic moments correlate with each other. Understanding this fundamental question can help us in elucidating the mechanism behind novel magnetic proper-ties manifested by the above mentioned materials. While NiSi is found to manifest a new phenomenon of magnetism driven intermediate metallic-superconducting phase, (Ca(CoxRu1-x)O3) tends to exhibit the metal-insulator transition with the critical phase boundary coinciding with the onset of strong continuum type magnetic fluctuations. Despite the presence of strong dynamic magnetic moment correlation, no trace of any type of static magnetic order is detected in any of these materials. On the other hand, strong static order with two consecutive antiferromagnetic phase transitions are detected in the intertwined honeycomb structured EuMn2As2. During the process of studying bulk materials using macroscopic measurement techniques, I have acquired detailed knowledge of chemical synthesis methods and several experimental measurement techniques, including the analysis of magnetic susceptibility and neutron scattering methods. The gained knowledge is applied in pinpointing the low temperature magnetic phase transition in an ongoing project in the lab of two dimensional artificial magnetic (permalloy) honeycomb lattice. Two dimensional magnetic honeycomb lattice provides a unique platform to study emergent magnetic phenomena in reduced degrees of freedom. The system is expected to develop novel spin solid order at low temperature. I have performed detailed analysis of non-linear susceptibility of permalloy honeycomb lattice, which revealed the non-thermodynamic nature of phase transition to the spin solid state in this system. In the ensuing chapters, I have explained each project in great detail. A brief overview of the previous research works and the motivations behind the study is provided in the Introduction section.

Low-temperature study of the static and dynamical magnetic properties of the random one-dimensional antiferromagnet(CD3)4NMncCu1−cCl3

1981 ◽  
Vol 23 (9) ◽  
pp. 4582-4591 ◽  
Author(s):  
Y. Endoh ◽  
I. U. Heilmann ◽  
R. J. Birgeneau ◽  
G. Shirane ◽  
A. R. McGurn ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
One Dimensional ◽  
Temperature Study

scholarly journals Synthesis, structure and low temperature study of electric transport and magnetic properties of GdSr2MnCrO7

2011 ◽  
Vol 34 (5) ◽  
pp. 1089-1093
Author(s):  
DEVINDER SINGH ◽  
MEENA SHARMA ◽  
SUSHMA SHARMA ◽  
RAJINDER SINGH
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Electric Transport ◽  
Temperature Study

scholarly journals Complex magnetism of the two-dimensional antiferromagnetic Ge2F: from a Néel spin-texture to a potential antiferromagnetic skyrmion

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8654-8663
Author(s):  
Fatima Zahra Ramadan ◽  
Flaviano José dos Santos ◽  
Lalla Btissam Drissi ◽  
Samir Lounis
Keyword(s):  
Density Functional Theory ◽  
Magnetic Properties ◽  
Density Functional ◽  
Low Energy ◽  
Two Dimensional ◽  
Functional Theory ◽  
2D Material ◽  
Energy Models ◽  
Spin Texture

Based on density functional theory combined with low-energy models, we explore the magnetic properties of a hybrid atomic-thick two-dimensional (2D) material made of germanene doped with fluorine atoms in a half-fluorinated configuration (Ge2F).

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