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The magnetic susceptibility and high magnetic ESR measurement of SrCu2(PO4)2 has been performed at temperaturesranging from 4.2 K to 300 K and 4.2 K to 77 K, respectively. The magnetic susceptibility shows a broad maximumaround T = 40 K. The magnetic susceptibility has been interpreted in terms of one-dimensional magnetic systems. Thetemperature dependence of the magnetic susceptibility indicated a good agreement with 4-spin alternating configurationmodel. In the ESR measurement, clear electron spin resonance (ESR) was observed. The integrated intensity for 120 and301 GHz has a broad maximum at around 40 K, which is consistent with the susceptibility result. A quantitativedescription gives resonance is the first and second triplet excited states of the excitation spectrum of 4-spin alternatingchain configuration. The g1, g2 and g3 values are approximately 2.21 at temperature above 40 K. The g2 dan g3 valueshave the dependence of temperature under 40 K. |
