Optics of hexagonal pyrrhotine (~Fe9S10)

SummaryReflectivities of a series of oriented polished sections through a single crystal of pyrrhotine (Fe1−αS) from Trepča, Yugoslavia, were measured by means of a spectral photometer attached to a microscope. This pyrrhotine consists of two phases, namely intermediate pyrrhotine (∼ Fe9S10) and monoclinic pyrrhotine (∼ Fe7S8), which were probably formed by exsolution. The phase relations of pyrrhotine at low temperatures are discussed. Optical data are given for the intermediate pyrrhotine from 440 to 660 mµ. From the reflectivities measured in air and oil against a carborundum standard, values of n, k, and κ were calculated for ω and ε and represented in dispersion curves. Also, sections through the various ‘indicating surfaces’ at 546 mµ are shown. The accuracy of the values, which should be approximately the same for other pyrrhotine phases, is discussed.

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AN INTERNAL FRICTION STUDY OF N-H AND O-H PAIRS IN SINGLE CRYSTAL OF NIOBIUM AT LOW TEMPERATURES

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19815117 ◽

1981 ◽

Vol 42 (C5) ◽

pp. C5-757-C5-761 ◽

Cited By ~ 7

Author(s):

R. Hanada ◽

M. Shinohara ◽

Y. Sado ◽

H. Kimura

Keyword(s):

Internal Friction ◽

Single Crystal ◽

Low Temperatures ◽

Friction Study

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

Journal de Physique ◽

10.1051/jphysrad:01959002002-3018000 ◽

1959 ◽

Vol 20 (2-3) ◽

pp. 180-184 ◽

Cited By ~ 7

Author(s):

W.C. Koehler ◽

M. K. Wilkinson ◽

J.W. Cable ◽

E.O. Wollan

Keyword(s):

Magnetic Fields ◽

Neutron Diffraction ◽

Single Crystal ◽

Low Temperatures

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Magnetic Quantum Oscillations from Surface States of Bi Nanowires

MRS Proceedings ◽

10.1557/opl.2011.1051 ◽

2011 ◽

Vol 1350 ◽

Author(s):

L. A. Konopko ◽

T. E. Huber ◽

A. A. Nikolaeva

Keyword(s):

Single Crystal ◽

Low Temperatures ◽

Surface States ◽

Charge Carriers ◽

Quantum Oscillations ◽

Wide Range ◽

Spin Orbit Interactions ◽

Conducting Tube ◽

Magnetic Quantum Oscillations ◽

Strong Spin

ABSTRACTIn this work, we report the results of studies of the transverse magnetoresistance (MR) of single-crystal Bi nanowires with diameter d<80 nm. The single-crystal nanowire samples were prepared by the Taylor-Ulitovsky technique. Due to the semimetal-to-semiconductor transformation and high density of surface states with strong spin-orbit interactions, the charge carriers are confined to the conducting tube made of surface states. The non monotonic changes of transverse MR that are equidistant in a direct magnetic field were observed at low temperatures in a wide range of magnetic fields up to 14 T. The period of oscillations depends on the wire diameter d as for the case of longitudinal MR. An interpretation of transverse MR oscillations is presented.

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Production of Single‐Crystal Copper Films at Low Temperatures

Journal of Applied Physics ◽

10.1063/1.1735913 ◽

1960 ◽

Vol 31 (9) ◽

pp. 1672-1674 ◽

Cited By ~ 4

Author(s):

Arthur Yelon ◽

R. W. Hoffman

Keyword(s):

Single Crystal ◽

Low Temperatures ◽

Copper Films ◽

Single Crystal Copper

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Specific heat of single crystal Ba0.6K0.4BiO3 at low temperatures

Solid State Communications ◽

10.1016/0038-1098(95)00626-5 ◽

1996 ◽

Vol 97 (3) ◽

pp. 175-178 ◽

Cited By ~ 7

Author(s):

E.B. Nyeanchi ◽

D.F. Brewer ◽

T.E. Hargreaves ◽

N.E. Hussey ◽

A.L. Thomson ◽

...

Keyword(s):

Single Crystal ◽

Specific Heat ◽

Low Temperatures

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Magnetic and Magnetoelastic Studies of Single Crystal Tb/sub 0.6/Dy/sub 0.4/Zn At Low Temperatures

1997 IEEE International Magnetics Conference (INTERMAG'97) ◽

10.1109/intmag.1997.597810 ◽

2005 ◽

Author(s):

J.R. Cullen ◽

J.P. Teter ◽

M. Wun-Fogle ◽

J.B. Restorff ◽

A.E. Clark

Keyword(s):

Single Crystal ◽

Low Temperatures

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

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.52.75 ◽

2006 ◽

Vol 52 ◽

pp. 75-80 ◽

Cited By ~ 1

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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