Table 3 Universal anisotropy AU of Mg–B binary compounds at external pressure.

From: Pressure effect of the mechanical, electronics and thermodynamic properties of Mg–B compounds A first-principles investigations

Universal anisotropy

Pressure (GPa)

MgB2

MgB4

MgB7

AU (GPa)

0

1.231

1.865

0.153

10

0.910

1.987

0.131

20

0.690

2.151

0.118

30

0.466

2.236

0.108

40

0.393

2.362

0.104

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