V2EX critical magnetic field

Critical Magnetic Field

释义 Definition

临界磁场:在超导等物理情境中,指使材料的某种状态发生“临界转变”的磁场强度;最常见的是使超导体失去超导性、转入常导态的磁场。在第二类超导体中常进一步区分下临界磁场(开始出现磁通涡旋)与上临界磁场(超导完全被破坏)。

发音 Pronunciation (IPA)

/krtkl mntk fild/

例句 Examples

The critical magnetic field of this superconductor is about 2 tesla.
这种超导体的临界磁场大约是 2 特斯拉。

As the temperature rises, the critical magnetic field decreases, which limits the device’s operating range.
随着温度升高,临界磁场会下降,从而限制该器件的工作范围。

词源 Etymology

  • critical 源自希腊语 kritikos,本义与“判断、关键点”相关,引申为“临界的、关键的”。
  • magnetic 源自希腊语 *magnētis (lithos)*(“马格尼西亚之石”,即磁石/磁铁矿相关)。
  • field 源自古英语 feld(原指“开阔地、田野”),在科学语境中转为“作用范围/场(如磁场、电场)”。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • Introduction to Superconductivity(Michael Tinkham):讨论临界磁场、相图与超导基本理论。
  • Superconductivity(R. D. Parks 编):多卷研究文集,频繁使用“critical magnetic field/critical field”等术语。
  • Principles of Superconductive Devices and Circuits(Theodore Van Duzer, Charles W. Turner):在器件与电路设计语境中涉及临界磁场限制。
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