magnetic susceptibility

简明释义

磁化系数

英英释义

例句

1.Scientists measure the magnetic susceptibility of metals to understand their magnetic properties.

科学家测量金属的磁化率以理解其磁性特性。

2.The magnetic susceptibility of a material determines how it reacts to an external magnetic field.

材料的磁化率决定了它如何对外部磁场作出反应。

3.In geology, the magnetic susceptibility can help identify different rock types.

在地质学中，磁化率可以帮助识别不同的岩石类型。

4.High magnetic susceptibility materials are often used in magnetic shielding applications.

高磁化率材料通常用于磁屏蔽应用。

5.The magnetic susceptibility of superconductors is significantly different from that of normal conductors.

超导体的磁化率与普通导体显著不同。

作文

Magnetic materials play a crucial role in various applications, ranging from electronic devices to medical equipment. One of the fundamental properties that describe how a material responds to an external magnetic field is its magnetic susceptibility. This term refers to the degree to which a material can be magnetized in response to an applied magnetic field. Understanding magnetic susceptibility is essential for engineers and scientists working in fields such as material science, physics, and electrical engineering. To comprehend magnetic susceptibility, it is important to first recognize that materials can be classified into different categories based on their magnetic properties. These categories include diamagnetic, paramagnetic, and ferromagnetic materials. Diamagnetic materials, such as copper and bismuth, have a negative magnetic susceptibility, meaning they are weakly repelled by a magnetic field. On the other hand, paramagnetic materials, like aluminum and platinum, exhibit a positive magnetic susceptibility, indicating that they are weakly attracted to magnetic fields. Lastly, ferromagnetic materials, such as iron and nickel, have a very high positive magnetic susceptibility and can retain magnetization even after the external field is removed.The concept of magnetic susceptibility is quantitatively defined by the equation: χ = M/H, where χ represents the magnetic susceptibility, M is the magnetization of the material, and H is the strength of the applied magnetic field. This relationship helps researchers understand how different materials will behave in various magnetic environments. For example, in designing magnetic storage devices, knowing the magnetic susceptibility of the materials used is vital to ensure data retention and retrieval efficiency.Moreover, magnetic susceptibility can vary with temperature, which is an important consideration in many practical applications. As the temperature changes, the thermal motion of atoms within a material can affect its ability to align with an external magnetic field. This phenomenon is particularly significant in ferromagnetic materials, where the magnetic susceptibility can greatly increase below a certain temperature known as the Curie temperature. Above this temperature, these materials lose their ferromagnetic properties and become paramagnetic, demonstrating the importance of understanding magnetic susceptibility in real-world situations.In summary, magnetic susceptibility is a key parameter that describes how materials respond to magnetic fields. Its classification into diamagnetic, paramagnetic, and ferromagnetic materials provides insight into their behavior and applications. The quantitative definition of magnetic susceptibility allows for precise calculations in engineering and scientific research, while the effects of temperature on this property highlight the complexities involved in material science. As technology continues to advance, the importance of understanding magnetic susceptibility will only grow, paving the way for innovations in electronics, data storage, and beyond.

磁性材料在各种应用中发挥着至关重要的作用，从电子设备到医疗设备。其中一个描述材料如何响应外部磁场的基本特性是其磁化率。这个术语指的是材料在施加磁场时被磁化的程度。理解磁化率对于在材料科学、物理学和电气工程等领域工作的工程师和科学家至关重要。要理解磁化率，首先需要认识到材料可以根据其磁性特性分为不同类别。这些类别包括抗磁性材料、顺磁性材料和铁磁性材料。抗磁性材料，如铜和铋，具有负的磁化率，意味着它们被磁场微弱排斥。另一方面，顺磁性材料，如铝和铂，表现出正的磁化率，表明它们被磁场微弱吸引。最后，铁磁性材料，如铁和镍，具有非常高的正磁化率，即使在外部磁场移除后也能保持磁化。磁化率的概念通过以下方程式定量定义：χ = M/H，其中χ代表磁化率，M是材料的磁化强度，H是施加的磁场强度。这个关系帮助研究人员了解不同材料在各种磁环境中的行为。例如，在设计磁存储设备时，了解所用材料的磁化率对于确保数据保留和检索效率至关重要。此外，磁化率可能会随温度变化而变化，这在许多实际应用中是一个重要的考虑因素。随着温度变化，材料内部原子的热运动可能影响其与外部磁场对齐的能力。这种现象在铁磁性材料中尤为显著，在这种材料中，磁化率在某个温度（称为居里温度）以下会大幅增加。在此温度以上，这些材料失去铁磁特性，变为顺磁性，显示了在实际情况下理解磁化率的重要性。总之，磁化率是描述材料如何响应磁场的关键参数。将其分类为抗磁性、顺磁性和铁磁性材料提供了对其行为和应用的洞察。磁化率的定量定义允许在工程和科学研究中进行精确计算，而温度对这一特性的影响则突显了材料科学中的复杂性。随着技术的不断进步，理解磁化率的重要性只会增加，为电子、数据存储等领域的创新铺平道路。