magnetic susceptibility

简明释义

磁化率

英英释义

例句

1.In physics, we often measure the magnetic susceptibility to understand the properties of different substances.

在物理学中，我们通常测量磁化率以理解不同物质的性质。

2.Scientists use magnetic susceptibility measurements to identify minerals in geological studies.

科学家使用磁化率测量来识别地质研究中的矿物。

3.The magnetic susceptibility of iron is significantly higher than that of aluminum.

铁的磁化率明显高于铝。

4.The magnetic susceptibility of the material determines how it will respond 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。

5.Diamagnetic materials have a negative magnetic susceptibility, meaning they are repelled by magnetic fields.

抗磁材料具有负的磁化率，这意味着它们会被磁场排斥。

作文

Magnetic susceptibility is a fundamental property of materials that describes their response to an applied magnetic field. It quantifies how much a material will become magnetized when exposed to a magnetic field, and it plays a crucial role in various applications ranging from electronics to medical imaging. Understanding magnetic susceptibility (磁化率) allows scientists and engineers to select appropriate materials for specific functions, enhancing the performance and efficiency of devices. In physics, magnetic susceptibility can be categorized into three types: paramagnetic, diamagnetic, and ferromagnetic. Paramagnetic materials have a positive magnetic susceptibility and are weakly attracted by a magnetic field. This means that when a paramagnetic material is placed in a magnetic field, it will align itself with the field, but the effect is relatively weak and temporary. Common examples of paramagnetic materials include aluminum and certain metal ions.On the other hand, diamagnetic materials exhibit a negative magnetic susceptibility and are repelled by magnetic fields. When exposed to a magnetic field, these materials create an opposing magnetic field, resulting in a weak repulsion. Most materials exhibit some degree of diamagnetism, but it is usually overshadowed by other magnetic properties. For instance, bismuth and copper are well-known diamagnetic substances.Ferromagnetic materials, such as iron, cobalt, and nickel, have a high positive magnetic susceptibility. They can retain their magnetization even after the external magnetic field is removed, making them essential for creating permanent magnets. The strong interaction between the magnetic moments of the atoms in ferromagnetic materials leads to this remarkable property. Understanding the magnetic susceptibility of these materials is vital in designing magnetic storage devices, transformers, and electric motors.The measurement of magnetic susceptibility is typically performed using techniques such as the Gouy balance or the SQUID (Superconducting Quantum Interference Device) magnetometer. These methods allow researchers to accurately determine the magnetic susceptibility of various materials under different conditions, providing valuable data for both theoretical studies and practical applications.In addition to its significance in material science, magnetic susceptibility also has implications in geology and environmental science. For example, the magnetic susceptibility of soil and rock samples can provide insights into their mineral composition and history. Geologists often use this property to identify and map mineral deposits, contributing to resource exploration and environmental assessments.In conclusion, magnetic susceptibility (磁化率) is a critical concept in understanding the magnetic behavior of materials. Its diverse applications in technology, geology, and beyond highlight the importance of this property in both theoretical research and practical implementations. As our knowledge of magnetic susceptibility continues to grow, we can expect even more innovative uses and advancements in various fields, ultimately improving our understanding of the physical world around us.

磁化率是材料的基本性质，描述了它们对施加的磁场的响应。它量化了材料在暴露于磁场时会如何被磁化，并且在从电子学到医学成像的各种应用中都扮演着至关重要的角色。理解磁化率（magnetic susceptibility）使科学家和工程师能够选择适合特定功能的材料，从而提高设备的性能和效率。在物理学中，磁化率可以分为三种类型：顺磁性、抗磁性和铁磁性。顺磁性材料具有正的磁化率，并且被磁场微弱吸引。这意味着当顺磁性材料置于磁场中时，它将与磁场对齐，但这种效果相对较弱且暂时。常见的顺磁性材料包括铝和某些金属离子。另一方面，抗磁性材料表现出负的磁化率，并且被磁场排斥。当暴露于磁场时，这些材料会产生一个相反的磁场，从而导致微弱的排斥力。大多数材料在某种程度上表现出抗磁性，但通常会被其他磁性特性所掩盖。例如，铋和铜是众所周知的抗磁性物质。铁磁性材料，如铁、钴和镍，具有高正的磁化率。它们可以在外部磁场移除后仍保持其磁化，使它们对于创建永久磁铁至关重要。铁磁材料中原子磁矩之间的强相互作用导致了这一显著特性。理解这些材料的磁化率对于设计磁存储设备、变压器和电动机至关重要。磁化率的测量通常采用如Gouy平衡或SQUID（超导量子干涉装置）磁强计等技术。这些方法允许研究人员在不同条件下准确确定各种材料的磁化率，提供宝贵的数据用于理论研究和实际应用。除了在材料科学中的重要性外，磁化率在地质学和环境科学中也有影响。例如，土壤和岩石样品的磁化率可以提供有关其矿物组成和历史的见解。地质学家经常利用这一特性来识别和绘制矿藏，促进资源勘探和环境评估。总之，磁化率（magnetic susceptibility）是理解材料磁性行为的关键概念。它在技术、地质学及其他领域的多样应用突显了这一属性在理论研究和实际实施中的重要性。随着我们对磁化率的认识不断增长，我们可以期待在各个领域中出现更多创新的用途和进步，最终改善我们对周围物理世界的理解。