Paramagnetism
| Also Known As | Paramagnetic material, magnetic paramagnetism, Curie paramagnetism |
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What is Paramagnetism?
Paramagnetism is a form of magnetism in which a material is weakly attracted to an externally applied magnetic field. It arises from unpaired electrons in atoms, ions, or molecules, which have permanent magnetic moments that align partially with an applied field. Unlike ferromagnetism, paramagnetic behavior disappears when the external field is removed and is temperature-dependent (Curie law: χ ∝ 1/T).
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Paramagnetism is a form of magnetism in which a material is weakly attracted to an externally applied magnetic field. It arises from unpaired electrons in atoms, ions, or molecules, which have permanent magnetic moments that align partially with an applied field. Unlike ferromagnetism, paramagnetic behavior disappears when the external field is removed and is temperature-dependent (Curie law: χ ∝ 1/T).
MRI contrast agents (paramagnetic Gd³⁺ complexes). Identifying unpaired electrons (ESR/EPR spectroscopy). Oxygen sensing (O₂ is paramagnetic). Magnetic susceptibility measurements for determining electron count in metal complexes. Liquid oxygen handling (paramagnetically attracted to magnets).
Materials with large paramagnetic susceptibility can be affected by strong magnetic fields (MRI magnets). O₂ is paramagnetic — relevant to liquid oxygen handling (fire/explosion hazard). Mn, Cu, Fe compounds: toxicity varies by compound.