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Sound propagation in the two dimensional magnetic system K2NiF4 |
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| Authors: | G Gorodetsky B Lüthi M Eibschütz HJ Guggenheim |
| Institution: | Bell Laboratories, Murray Hill, New Jersey 07974, USA |
| Abstract: | We have measured the classic constants C11, C33, C55 and C66 in K2NiF4 as a function of temperature between 4.2 and 200 K. A small velocity and attenuation anomaly was observed in the C11 mode at TN = 97.2 K. |
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