Magnetic order parameter in the perovskite system CaMn 7 O 12

2002 ◽  
Vol 74 (0) ◽  
pp. s1731-s1733 ◽  
Author(s):  
R. Przenios?o ◽  
I. Sosnowska ◽  
E. Suard ◽  
T. Hansen
Keyword(s):  
Order Parameter ◽  
Magnetic Order ◽  
Magnetic Order Parameter

scholarly journals Coexistence of superconductivity and magnetism inCa1−xNaxFe2As2: Universal suppression of the magnetic order parameter in 122 iron pnictides

2015 ◽  
Vol 92 (13) ◽  
Author(s):  
Philipp Materne ◽  
Sirko Kamusella ◽  
Rajib Sarkar ◽  
Til Goltz ◽  
Johannes Spehling ◽  
...  
Keyword(s):  
Order Parameter ◽  
Magnetic Order ◽  
Iron Pnictides ◽  
Magnetic Order Parameter

Electron holography study of the temperature variation of the magnetic order parameter within circularly chained nickel nanoparticle rings

2007 ◽  
Vol 91 (26) ◽  
pp. 262513 ◽  
Author(s):  
Akira Sugawara ◽  
Kei-ichi Fukunaga ◽  
M. R. Scheinfein ◽  
H. Kobayashi ◽  
H. Kitagawa ◽  
...  
Keyword(s):  
Temperature Variation ◽  
Order Parameter ◽  
Magnetic Order ◽  
Electron Holography ◽  
Nickel Nanoparticle ◽  
Magnetic Order Parameter

scholarly journals Macroscopic degeneracy and order in the 3D plaquette Ising model

2015 ◽  
Vol 29 (20) ◽  
pp. 1550109 ◽  
Author(s):  
Desmond A. Johnston ◽  
Marco Mueller ◽  
Wolfhard Janke
Keyword(s):  
Low Temperature ◽  
Magnetic Order ◽  
Finite Size ◽  
Temperature Phase ◽  
Finite Size Scaling ◽  
First Order ◽  
Magnetic Order Parameter ◽  
First Order Transition ◽  
Definition Of ◽  
Low Temperature Phase

The purely plaquette 3D Ising Hamiltonian with the spins living at the vertices of a cubic lattice displays several interesting features. The symmetries of the model lead to a macroscopic degeneracy of the low-temperature phase and prevent the definition of a standard magnetic order parameter. Consideration of the strongly anisotropic limit of the model suggests that a layered, “fuki-nuke” order still exists and we confirm this with multi-canonical simulations. The macroscopic degeneracy of the low-temperature phase also changes the finite-size scaling corrections at the first-order transition in the model and we see this must be taken into account when analyzing our measurements.

scholarly journals Influence of Magnetic Order Parameter Symmetry and Spin Fluctuations on Forming of Ferroelectric Order in Mn2O5 Oxides

2018 ◽  
Vol 185 ◽  
pp. 07007
Author(s):  
Vladimir Men`shenin
Keyword(s):  
Phase Transitions ◽  
Magnetic Order ◽  
Electric Polarization ◽  
Spin Fluctuations ◽  
Magnetic Phase Transitions ◽  
Group Method ◽  
Magnetic Phases ◽  
Magnetic Order Parameter ◽  
Parameter Symmetry ◽  
Order Parameter Symmetry

The magnetic phase transitions from paramagnetic to magnetic phases have studied in RMn2O5 oxides. Using a symmetry analysis and renormalization group method it was shown that an appearance of the electric polarization or lack whereof in the magnetic phases are determined the symmetry of these phases and spin fluctuations in the vicinity of the phase transitions.

Sign in / Sign up

Export Citation Format

Share Document