Describing a material or substance that exhibits antiferromagnetism, where opposing magnetic forces neutralize each other.
From antiferromagnet + -ic (suffix meaning 'of or relating to'). Developed as scientific terminology in solid-state physics during the mid-20th century.
Antiferromagnetic materials can suddenly change behavior at certain temperatures called the Néel temperature—it's like a molecular light switch that physics students use to understand how the universe's tiniest forces work.
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