paramagnetic
Significado: Describing a material that is weakly attracted to an external magnetic field due to the presence of unpaired electrons in its atoms or molecules.
Paramagnetic materials — including aluminium, platinum, and liquid oxygen — are drawn into a magnetic field but do not retain magnetisation once the field is removed, distinguishing them from ferromagnetic materials such as iron. The effect is temperature-dependent, growing weaker as temperature increases, a relationship described by Curie's law. In MRI imaging, paramagnetic contrast agents such as gadolinium are used to enhance the visibility of tissues.
Ejemplos
- The lecturer demonstrated that liquid oxygen is paramagnetic by showing it clinging to the poles of a powerful magnet. 讲师通过展示液态氧附着在强力磁铁的磁极上,证明了液态氧是顺磁性的。El profesor demostró que el oxígeno líquido es paramagnético haciéndolo adherirse a los polos de un potente imán.講師は液体酸素を強力な磁石の極に付着させて見せることで、液体酸素が常磁性であることを実演した。강사는 액체 산소를 강력한 자석의 극에 달라붙게 하여 액체 산소가 상자성임을 시연했다.
- Paramagnetic contrast agents are routinely administered during MRI scans to improve the resolution of soft-tissue images. 顺磁性造影剂在MRI扫描中被常规使用,以提高软组织图像的分辨率。Los agentes de contraste paramagnéticos se administran de forma rutinaria durante las resonancias magnéticas para mejorar la resolución de las imágenes de tejidos blandos.常磁性造影剤はMRIスキャンの際に日常的に投与され、軟部組織画像の解像度を向上させます。상자성 조영제는 MRI 스캔 시 연부 조직 영상의 해상도를 향상시키기 위해 일상적으로 투여됩니다.
- The research investigated the paramagnetic properties of transition metal complexes at temperatures approaching absolute zero. 该研究在接近绝对零度的温度下考察了过渡金属配合物的顺磁性质。La investigación estudió las propiedades paramagnéticas de complejos de metales de transición a temperaturas próximas al cero absoluto.その研究は絶対零度に近い温度で遷移金属錯体の常磁性を調査した。그 연구는 절대 영도에 가까운 온도에서 전이금속 착물의 상자성 특성을 조사했다.
Pronunciación
Guía de uso
Contexto: academic, professional
Tono: neutral
Origen e historia
From Greek para- (beside, alongside) and magnetic, from Greek magnētis lithos (stone of Magnesia). Coined by Michael Faraday in 1845.
Contexto cultural
Era: Modern
Generation: All ages
Social background: Universal
Más de este tema
More from General Advanced
Tarjetas, cuestionarios, audio y repetición espaciada — todo gratis