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Crystal Acts Like a Two‐Dimensional Antiferromagnet

JUL 01, 1969

DOI: 10.1063/1.3035680

Gloria B. Lubkin

A single crystal of $K_{2} {NiF}_{4}$ acts like a two‐dimensional antiferromagnet above a critical temperature $T_{n} = 97.1 K,$ according to a recent experiment at Brookhaven. At the critical temperature the crystal undergoes an extremely sharp phase transition to long‐range order in three dimensions. Then below that temperature the magnetization varies as ${(T−T}_{n})^{β}$ where $β = 0.15,$ again suggesting that the magnetic behavior is two dimensional.

© 1969. American Institute of Physics

This Content Appeared In

Volume 22, Number 7

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