Spin-lattice coupling in the ferrimagnetic semiconductor FeCr2S4 probed by surface acoustic waves

Mueller, Claus; Zestrea, V.; Tsurkan, V.; Horn, S.; Tidecks, R.; Wixforth, Achim

doi:10.1063/1.2164529

Cited by 6 publications

(4 citation statements)

References 24 publications

(33 reference statements)

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“…The monoclinic pyrrhotite has a low-temperature transition in remanence and coercive force at 30-35 K (most likely isotropic point of the magnetocrystalline anisotropy, Dekkers 1989, Rochette et al 1990, Dunlop and Özdemir 1997. cubic-to-triclinic symmetry reduction within crystallographic domains (Tsurkan et al 2001a,b,c, Maurer et al 2003, Müller et al 2006.…”

Section: Pyrrhotitementioning

confidence: 99%

Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies

Kohout

Kosterov

Haloda

et al. 2010

Icarus

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Please cite this article as: Kohout, T., Kosterov, A., Haloda, J., Týcová, P., Zbořil, R., Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies, Icarus (2010), AbstractIn this study we present a review of low-temperature magnetic properties of alabandite (Fe,Mn)S, daubreelite FeCr 2 S 4 pyrrhotite Fe 1-x S and troilite FeS updated with new experimental data. The results indicate that besides FeNi alloys mainly daubreelite with its Curie temperature T C ~150 K and strong induced and remanent magnetizations may be a significant magnetic mineral in cold environments and may complement that of FeNi or even dominate magnetic properties of sulfide rich bodies at temperatures below T C .Comets are known to contain iron bearing sulfides within dusty fraction and their surfaces are subject to temperature variations in the range of 100-200 K down to the depth of several meters while the cometary interior is thermally stable at several tens of Kelvin which is within the temperature range where alabandite, daubreelite or troilite are "magnetic". Thus not only FeNi alloys, but also sulfides have to be considered in the interpretation of magnetic data from cometary objects such as will be delivered by Rosetta mission. Modeling indicates that magnetic interactions between cometary nucleus containing iron-bearing sulfides and interplanetary magnetic field would be difficult, but not impossible, to detect from orbit.Rosetta's Philae lander present on the surface would provide more reliable signal.

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Section: Pyrrhotitementioning

confidence: 99%

Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies

Kohout

Kosterov

Haloda

et al. 2010

Icarus

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“…The range extends from 114.6 MHz at 4.2 K ͑where V 2 O 3 behaves like a dielectric͒ to 112.9 MHz at 250 K ͑where V 2 O 3 had become metallic͒. A strong change of f t is observed at T MI ͑as expected 30 ͒.…”

Section: B Attenuationmentioning

confidence: 93%

Early stages of the metal-to-insulator transition of a thin V2O3 film

Müller

Nateprov

Klemm

et al. 2008

Journal of Applied Physics

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The metal-to-insulator ͑MI͒ transition of a V 2 O 3 thin film is studied, using a surface acoustic wave delay line. The V 2 O 3 film covers not only the sound path but also one of the interdigital transducers ͑IDTs͒. The resulting mismatch of the IDTs detunes the delay line, until the film passes through the MI transition. This "self-retuning" behavior makes the device extremely sensitive to the initial changes of the electrical and dielectric properties of the film during the MI transition. Attenuation and sound velocity are measured between 260 and 4.2 K. Both suggest a precursor to the MI transition in the paramagnetic metallic regime. The existence of a precursor is consistent with recent extended x-ray absorption fine structure measurements. An oscillatory behavior with steep reductions of the sound velocity is observed during the MI transition. The reductions of the sound velocity probably indicate the recently predicted anomaly at the Mott transition.

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“…The first example is the study of changes of elastic and magnetic properties of the ferrimagnetic semiconductor FeCr 2 S 4 [25] .…”

Section: The Ferrimagnetic Semiconductor Fecr 2 Smentioning

confidence: 99%

“…26) of a single crystal of the same material is shown (FC: field cooled, measured at decreasing temperature; ZFC: zero field cooled, measured at increasing temperature). The thin line is a guide to the eye [25].…”

Section: The Ferrimagnetic Semiconductor Fecr 2 Smentioning

confidence: 99%

Surface acoustic wave devices

Müller¹,

Nateprov²,

Obermeier³

et al. 2007

SPIE Proceedings

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Starting with an introduction to surface acoustic waves, their generation and detection using interdigital transducers (IDTs) on piezoelectric materials (e.g. LiNbO 3 and ZnO) will be reviewed. Then the application of surface acoustic waves in electronic devices will be presented. Moreover, recent studies, using the technique of attaching the material of investigation onto the sound path of the acoustic delay line between the IDTs is discussed.

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Spin-lattice coupling in the ferrimagnetic semiconductor FeCr2S4 probed by surface acoustic waves

Cited by 6 publications

References 24 publications

Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies

Low-temperature magnetic properties of iron-bearing sulfides and their contribution to magnetism of cometary bodies

Early stages of the metal-to-insulator transition of a thin V2O3 film

Surface acoustic wave devices

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