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strates a connection between Fermi surface nesting and magnetism and consequently strongly suggests that the theory of Fermi-surface-nesting-driven magnetism is still valid. 

## IV. COMPETITION OF INSTABILITIES IN PAULI SUSCEPTIBILITIES IN 1111 COMPOUNDS 

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In what follows we concentrate on the 1111 compounds and perform a comparative study among LaOFe Pn ( Pn =P, As, Sb, Bi). In Table III and IV, we first present the comparisons of two representative atomic distances among different structures optimized within GGA and experimental structures, if available. Our results agree 

