Phys. Rev. Lett. 27, 1380–1382 (1971)Multiple Spin Echoes for Mn55 in Manganese FerritesReceived 30 April 1971; revised 20 September 1971; published in the issue dated 15 November 1971 Multiple NMR spin echoes, up to 22, have been observed for a two-pulse excitation. Possible explanations of this effect are proposed. © 1971 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.27.1380
DOI:
10.1103/PhysRevLett.27.1380
PACS:
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