ferromagnetism

简明释义

英[ˌferəʊˈmæɡnɪˌtɪzəm]美[ˌferoʊˈmæɡnətɪzəm]

n. [物] 铁磁性

英英释义

单词用法

同义词

反义词

例句

1.The transition from ferromagnetism to paramagnetism involves a transition from ordered to disordered orientations of electron spins.

由铁磁性转变为顺磁性涉及到电子自旋的取向由有序向无序转变。

2.While the temperature is lowered to TC the number and volume reach a crisis value, ferromagnetism of exchanging effect is occurred.

当温度降低到TC以下时，磁极化子的数目和体积达到一个临界值，磁极化子之间产生铁磁交换作用。

3.The new theory admits the Earth's inner core to be a ferromagnet. The ferromagnetism of inner core is supported by observed anisotropic property of inner core in transmitting seismic waves.

地球的内核是—磁铁，内核的铁磁性已被观察到的地震波速度各向异性所证实。

4.The physical origin of the ferromagnetism and antiferromagnetism was explained.

对材料产生铁磁性和反铁磁性的物理根源进行解释。

5.The new theory admits the Earth's inner core to be a ferromagnet. The ferromagnetism of inner core is supported by observed anisotropic property of inner core in transmitting seismic waves.

地球的内核是—磁铁，内核的铁磁性已被观察到的地震波速度各向异性所证实。

6.The derivation of the effective magnetic field expression for the ferromagnetism materials with applied stress.

地磁场中受力铁磁性材料有效场表达式的推导。

7.Metal clusters and metal oxides also have been excluded for the origin of the ferromagnetism in samples.

对于样品铁磁性来源，排除了磁性离子团簇及金属氧化物的可能性。

8.The ferromagnetism can be significantly improved since the doping of Co changes the G antiferromagnetic order into the ferromagnetic one.

掺杂导致原有的G型反铁磁序发生变化，形成了亚铁磁序的磁结构，材料的铁磁性有了很大提高；

9.The researchers give the example of ferromagnetism, where particles in a magnet exhibit perfect interconnection at a precise, "critical" temperature.

研究人员用磁铁来作为例子，磁铁中的粒子在一个精确的“临界”温度条件下，才会显示出完美的互相联系。

10.The phenomenon of ferromagnetism is responsible for the magnetic properties of iron.

铁磁性现象是铁的磁性特性的原因。

11.Understanding ferromagnetism is crucial for developing better magnetic storage devices.

理解铁磁性对于开发更好的磁存储设备至关重要。

12.In many applications, ferromagnetism allows materials to retain their magnetization even after the external magnetic field is removed.

在许多应用中，铁磁性使材料即使在外部磁场移除后仍能保持其磁化状态。

13.The study of ferromagnetism has led to significant advancements in materials science.

铁磁性的研究推动了材料科学的重要进展。

14.Certain alloys exhibit enhanced ferromagnetism, making them ideal for use in electric motors.

某些合金表现出增强的铁磁性，使它们非常适合用于电动机。

作文

Ferromagnetism is a fascinating physical phenomenon that plays a crucial role in our understanding of magnetism and materials science. It refers to the property of certain materials, such as iron, cobalt, and nickel, to become permanently magnetized when exposed to a magnetic field. This unique characteristic is due to the alignment of magnetic moments of atoms within the material, which can lead to a strong overall magnetic effect. In this essay, we will explore the concept of ferromagnetism and its significance in various applications, as well as its underlying principles. To begin with, it is essential to understand what ferromagnetism actually means. In simple terms, ferromagnetism (铁磁性) is a type of magnetism that occurs in materials where the magnetic moments of atoms align parallel to each other, resulting in a net magnetic field. This alignment happens due to the exchange interaction between neighboring atoms, which favors parallel orientation of their magnetic moments. Unlike paramagnetic materials, which only exhibit magnetism in the presence of an external magnetic field, ferromagnetic materials retain their magnetization even after the external field is removed. One of the most significant aspects of ferromagnetism is its temperature dependence. Each ferromagnetic material has a specific temperature known as the Curie temperature, above which it loses its ferromagnetic properties and becomes paramagnetic. For example, iron has a Curie temperature of around 770 degrees Celsius. Below this temperature, iron exhibits strong ferromagnetism, allowing it to be used in various applications, from electric motors to data storage devices. The practical applications of ferromagnetism are vast and varied. One of the most common uses is in the manufacturing of permanent magnets, which are essential components in many electronic devices, including speakers, microphones, and hard drives. The ability of ferromagnetic materials to maintain their magnetization makes them ideal for these applications, as they can provide a stable magnetic field without the need for continuous power supply. Moreover, ferromagnetism is also critical in the development of magnetic materials for data storage technologies. Hard disk drives, for instance, utilize the principles of ferromagnetism to store digital information. Data is encoded by magnetizing tiny regions of a ferromagnetic disk in different directions, representing binary information. The ability to read and write data efficiently relies on the ferromagnetic properties of the material used in the disk. In addition to traditional applications, ferromagnetism is also being explored in cutting-edge technologies such as spintronics. Spintronics is a field that focuses on the intrinsic spin of electrons, in addition to their charge, to develop new types of electronic devices. By leveraging ferromagnetism, researchers aim to create faster and more efficient electronic components that could revolutionize computing and data processing. In conclusion, ferromagnetism is a fundamental phenomenon that underpins many aspects of modern technology. Its unique properties allow for the creation of permanent magnets and play a vital role in data storage and electronic devices. Understanding ferromagnetism not only enhances our knowledge of magnetism but also opens up new avenues for innovation in various fields. As research continues to advance, the potential applications of ferromagnetism will undoubtedly expand, leading to exciting developments in technology and materials science.

铁磁性是一个迷人的物理现象，在我们理解磁性和材料科学方面发挥着至关重要的作用。它指的是某些材料（如铁、钴和镍）在暴露于磁场时变得永久磁化的特性。这种独特的特性源于材料中原子的磁矩的排列，这可以导致整体强大的磁效应。在这篇文章中，我们将探讨ferromagnetism（铁磁性）的概念及其在各种应用中的重要性，以及其基本原理。 首先，了解ferromagnetism（铁磁性）究竟意味着什么是至关重要的。简单来说，ferromagnetism（铁磁性）是一种发生在材料中的磁性类型，其中原子的磁矩平行对齐，从而产生净磁场。这种排列是由于邻近原子之间的交换相互作用，它偏爱其磁矩的平行取向。与仅在外部磁场存在时表现出磁性的顺磁材料不同，铁磁材料即使在外部场移除后也会保持其磁化状态。 ferromagnetism（铁磁性）最显著的一个方面是其温度依赖性。每种铁磁材料都有一个特定的温度，称为居里温度，超过此温度后，它失去铁磁特性，变为顺磁性。例如，铁的居里温度约为770摄氏度。在这个温度以下，铁表现出强烈的ferromagnetism（铁磁性），使其在各种应用中得以使用，从电动机到数据存储设备。 ferromagnetism（铁磁性）的实际应用广泛多样。其中一个最常见的用途是在制造永久磁铁中，永久磁铁是许多电子设备的重要组成部分，包括扬声器、麦克风和硬盘驱动器。铁磁材料保持其磁化状态的能力使其成为这些应用的理想选择，因为它们可以提供稳定的磁场，而无需持续的电源供应。 此外，ferromagnetism（铁磁性）在数据存储技术的磁性材料开发中也至关重要。例如，硬盘驱动器利用铁磁性的原理来存储数字信息。数据通过以不同方向磁化铁磁盘上的微小区域进行编码，表示二进制信息。读取和写入数据的能力依赖于用于磁盘的材料的铁磁特性。 除了传统应用外，ferromagnetism（铁磁性）还在尖端技术如自旋电子学中得到探索。自旋电子学是一个专注于电子内在自旋的领域，除了其电荷外，以开发新型电子设备。通过利用ferromagnetism（铁磁性），研究人员旨在创造更快、更高效的电子元件，这可能会彻底改变计算和数据处理。 总之，ferromagnetism（铁磁性）是一个基本现象，支撑着现代技术的许多方面。其独特的属性使得永久磁铁的创建成为可能，并在数据存储和电子设备中发挥着重要作用。理解ferromagnetism（铁磁性）不仅增强了我们对磁性的认识，还为各个领域的创新开辟了新的途径。随着研究的不断进展，ferromagnetism（铁磁性）的潜在应用无疑会扩大，导致技术和材料科学的激动人心的发展。