Magnetic alignment of nonmagnetic silicates caused by paramagnetic anisotropy: Origin of polarization observed in planetary formation region
Possible dust alignment in dense regions due to paramagnetic anisotropy Δ χPARA is discussed based on the results of a laboratory experiment on ortho-pyroxene grains containing a small amount of Fe 2+ ions (1.8 mol%). Ortho-pyroxene has been detected in circum-stellar regions by infrared emission sp...
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| Veröffentlicht in: | Earth, planets, and space planets, and space, 2010-01, Vol.62 (1), p.99-103 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | Possible dust alignment in dense regions due to paramagnetic anisotropy Δ
χPARA
is discussed based on the results of a laboratory experiment on ortho-pyroxene grains containing a small amount of Fe
2+
ions (1.8 mol%). Ortho-pyroxene has been detected in circum-stellar regions by infrared emission spectroscopy. Our experiment was performed at room temperature using He gas as the dispersing medium. Although the grains do not contain strong magnetic moments, alignment was achieved at low field strength ( |
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| ISSN: | 1343-8832 1880-5981 |
| DOI: | 10.5047/eps.2008.12.003 |