Hyperfine interactions in rare-earth orthoferrites during hydrostatic compression
Doroshev V. D. , Ivanov S. F. , Molchanov A. N. , Moskvin A. S.
The effect of large hydrostatic pressures on hyperfine interactions in rare-earth orthoferrites at Τ = 4.2 К has been studied by a 57Fe NMR method. A new result is found: The baric coefficient of the hyperfine field depends strongly (to the point of changing sign) on the bond angle in the chain Fe3+ Τ — О2-" — Fe3+1.
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![](/ps/1247/article_18866_800_head.png "The effect of large hydrostatic pressures on hyperfine interactions in rare-earth orthoferrites at <i>Τ </i>= 4.2 К has been studied by a <sup>57</sup>Fe NMR method. A new result is found: The baric coefficient of the hyperfine field depends strongly (to the point of changing sign) on the bond angle in the chain Fe<sup>3</sup> <sup>+</sup> Τ — О<sup>2-</sup>" — Fe<sup>3+</sup><i>1.</i>")