High‐Resolution Polarizing Microscope for the Observation of Magnetic Structures at Low Temperatures

1973 ◽  
Vol 44 (4) ◽  
pp. 379-382 ◽  
Author(s):  
H. Kirchner
Keyword(s):  
High Resolution ◽  
Low Temperatures ◽  
Magnetic Structures ◽  
Polarizing Microscope

scholarly journals Scanning-Ion Microscopy with Polarization Analysis (Simpa)

1993 ◽  
Vol 313 ◽  
Author(s):  
N. J. Zheng ◽  
C. Rau
Keyword(s):  
High Resolution ◽  
Spin Polarization ◽  
Imaging Technique ◽  
Ion Beam ◽  
Polarization Analysis ◽  
Polarized Electrons ◽  
Magnetic Structures ◽  
Magnetic Imaging ◽  
Spin Polarized ◽  
Ion Microscopy

ABSTRACTWe have developed a novel, high-resolution magnetic imaging technique, scanning-ion microscopy with polarization analysis (SIMPA). In SIMPA, a highly-focused, scanning Ga+ ion beam is used to excite spin-polarized electrons at surfaces of ferromagnetic Materials. By Measuring the intensity and the spin polarization of the emitted electrons using a newly developed, compact mott polarimeter, topographic and magnetic images of magnetic structures are obtained. We report on first SIMPA studies on single-crystalline Fe samples.

scholarly journals Field-induced magnetic structures inTb2Ti2O7at low temperatures: From spin-ice to spin-flip structures

2010 ◽  
Vol 82 (17) ◽  
Author(s):  
A. P. Sazonov ◽  
A. Gukasov ◽  
I. Mirebeau ◽  
H. Cao ◽  
P. Bonville ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Spin Ice ◽  
Magnetic Structures ◽  
Spin Flip

Ising Model Simulation Of Magnetic Structures IN A Zn-Mg-Ho Structure Model

1998 ◽  
Vol 553 ◽  
Author(s):  
S. Matsuo ◽  
T. Ishimasa ◽  
H. Nakano
Keyword(s):  
Scattering Amplitudes ◽  
Magnetic Structure ◽  
Long Range ◽  
Low Temperatures ◽  
Model Simulation ◽  
Structure Model ◽  
Patterson Function ◽  
Magnetic Structures ◽  
Shortest Distance ◽  
Diffraction Patterns

AbstractSimulated annealing calculations were performed for Ising spins on Ho sites under Ruderman-Kittel-Kasuya-Yosida-like alternating exchange interactions for an icosahedral Zn-Mg-Ho structure model with intent to investigate the magnetic structures at low temperatures. Magnetic structures were analyzed by means of a Patterson function and diffraction patterns arising from spin-dependent scattering amplitudes. The diffraction patterns from the magnetic structure consist of spots at low temperatures in the case of an antiferromagnetic interaction for the shortest distance (3.37 Å) and a ferromagnetic interaction for the second shortest distance (5.46 Å). The Patterson maps indicate a long-range antiferromagnetic correlation. These facts mean that a long-range ordered magnetic structure is realized at low temperatures. The contrast of the diffraction patterns is different from the patterns arising from the spin-independent scattering amplitudes from the Ho sites. A reversed sign interaction, ferromagnetic for the shortest distance and antiferromagnetic for the second shortest distance, results in broad intensity minima in the magnetic diffraction at the positions of strong spots in the spin-independent diffraction by lattice sites. It corresponds to the degradation of the long-range correlation.

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