Higher-Magnesium-Doping Effects on the Singlet Ground State of the Shastry-Sutherland SrCu₂(BO₃)₂.

From the EDS point analysis, a clearly distinguished Mg emission peak is visible in all cases and thus unambiguously confirms the presence of Mg in the matrix for all three doping concentrations. Although the average semiquantitative values yield an approximate x = 0.07 for the nominal x = 0.10 sample, a clear trend showing an increase in x with the nominal doping concentrations is observed–see Table 1 .

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