## Abstract The origin of magnetic fields in the Universe is a cosmology problem. The evolution of the field is a plasma physics problem. I review these problems and focus on magnetogenesis in accretion disks, specifically, the transition from the Biermann battery, which creates seed fields, to amp
Magnetic susceptibility at high fields of
β Scribed by T. Waki; N. Tsujii; Y. Itoh; C. Michioka; K. Yoshimura; O. Suzuki; H. Kitazawa; G. Kido
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 310 KB
- Volume
- 398
- Category
- Article
- ISSN
- 0921-4526
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β¦ Synopsis
The temperature dependence of magnetic susceptibility was measured for the S ΒΌ 1 2 quasi one dimensional antiferromagnet Pb 2 V 3 O 9 under the steady magnetic field up to m 0 H ΒΌ 30 T. This material has alternating exchange interaction and a spin-gap at zero magnetic field. An anomaly of magnetic susceptibility indicating the field-induced antiferromagnetic long-range order was observed in high magnetic fields. The NeΒ΄el temperature at high fields is much lower than the calculated value based on the standard mean-field theory of field-induced magnetic order.
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The nuclear magnetic resonance NMR line shifts of ortho-hydrogen ## Ε½ . molecules relative to the lines of hydrogen deuteride HD molecules in a para-hydrogen matrix are reviewed in terms of the molecular spectroscopy of the rotational energy levels of ortho-hydrogen molecules in high magnetic fiel