Correlation between crystallographic superstructure and magnetic structures in finite magnetic fields: A neutron study on a single crystal ofHo2PdSi3

2010 ◽  
Vol 82 (17) ◽  
Author(s):  
Matthias Frontzek ◽  
Fei Tang ◽  
Peter Link ◽  
Astrid Schneidewind ◽  
Jens-Uwe Hoffman ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Single Crystal ◽  
Magnetic Structures

scholarly journals Neutron diffraction study of magnetic structures in single crystal Ho2PdSi3in magnetic fields up to 5 T

2010 ◽  
Vol 251 ◽  
pp. 012017 ◽  
Author(s):  
Fei Tang ◽  
Peter Link ◽  
Matthias Frontzek ◽  
Jean-Michel Mignot ◽  
Jens-Uwe Hoffmann ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Neutron Diffraction ◽  
Single Crystal ◽  
Diffraction Study ◽  
Neutron Diffraction Study ◽  
Magnetic Structures

Dislocations, Ordering and Antiferromagnetic Domains in MnO

1970 ◽  
Vol 28 ◽  
pp. 522-523
Author(s):  
D. J. Barber ◽  
R. G. Evans
Keyword(s):  
Electron Diffraction ◽  
Single Crystal ◽  
Optical Microscopy ◽  
Defect Chemistry ◽  
Magnetic Structures ◽  
Optically Transparent ◽  
Magnetic Features ◽  
Antiferromagnetic Domains

Manganese (II) oxide, MnO, in common with CoO, NiO and FeO, possesses the NaCl structure and shows antiferromagnetism below its Neel point, Tn∼ 122 K. However, the defect chemistry of the four oxides is different and the magnetic structures are not identical. The non-stoichiometry in MnO2 small (∼2%) and below the Tn the spins lie in (111) planes. Previous work reported observations of magnetic features in CoO and NiO. The aim of our work was to find explanations for certain resonance results on antiferromagnetic MnO.Foils of single crystal MnO were prepared from shaped discs by dissolution in a mixture of HCl and HNO3. Optical microscopy revealed that the etch-pitted foils contained cruciform-shaped precipitates, often thick and proud of the surface but red-colored when optically transparent (MnO is green). Electron diffraction and probe microanalysis indicated that the precipitates were Mn2O3, in contrast with recent findings of Co3O4 in CoO.

Single crystal neutron diffraction studies of antiferromagnets at low temperatures in applied magnetic fields

1959 ◽  
Vol 20 (2-3) ◽  
pp. 180-184 ◽  
Author(s):  
W.C. Koehler ◽  
M. K. Wilkinson ◽  
J.W. Cable ◽  
E.O. Wollan
Keyword(s):  
Magnetic Fields ◽  
Neutron Diffraction ◽  
Single Crystal ◽  
Low Temperatures

scholarly journals Modeling of magneto-conductivity of bismuth selenide: a topological insulator

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Yogesh Kumar ◽  
Rabia Sultana ◽  
Prince Sharma ◽  
V. P. S. Awana
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Single Crystal ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Field Range ◽  
X Ray ◽  
Bulk Carriers ◽  
Different Temperatures

AbstractWe report the magneto-conductivity analysis of Bi2Se3 single crystal at different temperatures in a magnetic field range of ± 14 T. The single crystals are grown by the self-flux method and characterized through X-ray diffraction, Scanning Electron Microscopy, and Raman Spectroscopy. The single crystals show magnetoresistance (MR%) of around 380% at a magnetic field of 14 T and a temperature of 5 K. The Hikami–Larkin–Nagaoka (HLN) equation has been used to fit the magneto-conductivity (MC) data. However, the HLN fitted curve deviates at higher magnetic fields above 1 T, suggesting that the role of surface-driven conductivity suppresses with an increasing magnetic field. This article proposes a speculative model comprising of surface-driven HLN and added quantum diffusive and bulk carriers-driven classical terms. The model successfully explains the MC of the Bi2Se3 single crystal at various temperatures (5–200 K) and applied magnetic fields (up to 14 T).

Application of dynamic and combined magnetic fields in the 300mm silicon single-crystal growth

2002 ◽  
Vol 5 (4-5) ◽  
pp. 347-351 ◽  
Author(s):  
Erich Tomzig ◽  
Janis Virbulis ◽  
Wilfried von Ammon ◽  
Yuri Gelfgat ◽  
Leonid Gorbunov
Keyword(s):  
Crystal Growth ◽  
Magnetic Fields ◽  
Single Crystal ◽  
Single Crystal Growth ◽  
Silicon Single Crystal ◽  
Combined Magnetic Fields

Large rotating magnetocaloric effect at low magnetic fields in the Ising-like antiferromagnet DyScO3 single crystal

2019 ◽  
Vol 777 ◽  
pp. 673-678 ◽  
Author(s):  
Yao-Dong Wu ◽  
Yong-Liang Qin ◽  
Xiao-Hang Ma ◽  
Ren-Wen Li ◽  
Yi-Yong Wei ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Single Crystal ◽  
Magnetocaloric Effect

Magnetic Structure of Manganese Pyrophosphate and Copper Pyrophosphate

1972 ◽  
Vol 50 (24) ◽  
pp. 3079-3084 ◽  
Author(s):  
J. A. R. Stiles ◽  
C. V. Stager
Keyword(s):  
Phase Transition ◽  
Neutron Diffraction ◽  
Single Crystal ◽  
Magnetic Structure ◽  
Magnetic Structures

The magnetic structures of antiferromagnetic manganese pyrophosphate and copper pyrophosphate have been determined by single crystal neutron diffraction techniques. There have been two previous determinations of the structure of manganese pyrophosphate. The discrepancy between these results is explained by postulating a crystallographic phase transition.

Crossover Antiferro-Superparamagnetism and Related Kondo-Like Anomalies of Resistivity in Clustered Fe/Cr Multilayers

2006 ◽  
Vol 52 ◽  
pp. 75-80 ◽  
Author(s):  
V.V. Ustinov ◽  
L.N. Romashev ◽  
M.A. Milyaev ◽  
T.P. Krinitsina ◽  
A.M. Burkhanov
Keyword(s):  
Magnetic Fields ◽  
Single Crystal ◽  
Low Temperatures ◽  
Ultrahigh Vacuum ◽  
Layered Nanostructures ◽  
Superparamagnetic Properties

The magnetic and magnetoresistive properties of nanostructured Fe/Cr multilayers with ultra-thin Fe layers (the nominal Fe thickness tFe is down to 0.3 Å) have been investigated at low temperatures (down to 2 K) in magnetic fields up to 90 kOe. Nanostructures were MBE grown in ultrahigh vacuum on single crystal MgO substrates. It is shown that Fe layers in nanostructures with tFe < 2 Å are not continuous but consist of separate ferromagnetic clusters. Such cluster-layered nanostructures exhibit superparamagnetic properties and the Kondo-like behavior of resistivity.

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