antiferromagnetism: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “antiferromagnetism” mean?
A physical phenomenon where adjacent magnetic moments (spins) in a material align in opposite directions, resulting in zero net magnetization.
Audio
Pronunciation
Definition
Meaning and Definition
A physical phenomenon where adjacent magnetic moments (spins) in a material align in opposite directions, resulting in zero net magnetization.
The property of certain materials (like chromium or manganese oxide) where the magnetic structure exhibits alternating spin orientations, leading to unique magnetic and thermal behaviors distinct from ferromagnetism or paramagnetism.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; spelling and usage are identical in both variants.
Connotations
Purely technical term with no cultural or regional connotations.
Frequency
Extremely low frequency in general discourse; used exclusively in physics, materials science, and related engineering fields.
Grammar
How to Use “antiferromagnetism” in a Sentence
The [material/substance] exhibits antiferromagnetism below [temperature].Antiferromagnetism in [material] arises due to [exchange interaction].Vocabulary
Collocations
Examples
Examples of “antiferromagnetism” in a Sentence
adjective
British English
- The antiferromagnetic phase was stable up to 300 Kelvin.
- They observed an antiferromagnetic coupling between the layers.
American English
- The sample displayed antiferromagnetic ordering below its Néel temperature.
- Antiferromagnetic materials are crucial for spintronic applications.
Usage
Meaning in Context
Business
Never used.
Academic
Core term in condensed matter physics and materials science papers; appears in advanced textbooks and research articles.
Everyday
Virtually never used.
Technical
Essential term in physics laboratories, engineering specifications for spintronic devices, and technical reports on magnetic materials.
Vocabulary
Synonyms of “antiferromagnetism”
Strong
Neutral
Vocabulary
Antonyms of “antiferromagnetism”
Watch out
Common Mistakes When Using “antiferromagnetism”
- Misspelling as 'anti-ferro-magnetism' with excessive hyphens.
- Confusing it with 'diamagnetism' (weak repulsion from magnetic fields).
- Using it as a general term for 'non-magnetic'.
FAQ
Frequently Asked Questions
The Néel temperature (Tn) is the critical temperature above which antiferromagnetic order is lost and the material becomes paramagnetic.
Yes, many antiferromagnetic materials are electrical insulators, such as manganese oxide (MnO). The magnetic and electrical properties are related but distinct.
Yes, increasingly so. Antiferromagnets are key for developing next-generation spintronic memory devices (like MRAM) due to their stability and fast switching speeds, and they are used in read heads for hard disk drives.
It is often detected using neutron diffraction or scattering, as neutrons have a magnetic moment and can probe the alternating spin structure. Other methods include measuring magnetic susceptibility, which shows a characteristic peak at the Néel temperature.
A physical phenomenon where adjacent magnetic moments (spins) in a material align in opposite directions, resulting in zero net magnetization.
Antiferromagnetism is usually technical/scientific in register.
Antiferromagnetism: in British English it is pronounced /ˌæntiˌferəʊˈmæɡnɪtɪzəm/, and in American English it is pronounced /ˌæntiˌferoʊˈmæɡnɪtɪzəm/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
ANTI-FERRO-MAGNETISM: ANTI (against) + FERRO (iron/ magnetic, as in ferromagnet) + MAGNETISM. Think: 'magnetism where spins are *against* each other, unlike in a common ferromagnet.'
Conceptual Metaphor
A well-drilled military unit where every other soldier faces the opposite direction, resulting in no net movement for the unit as a whole.
Practice
Quiz
What is the primary characteristic of antiferromagnetism?