CONTENTS

Production, Structure, Properties

Oganov A. R., Solozhenko V. L., Gatti C., Kurakevych O. O., Le Godec Y. The high-pressure phase of boron, g-B₂₈: disputes and conclusions of 5 years after discovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .

3

Macchi P. On the nature of chemical bonding in g-boron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

Le Godec Y. Comparative review of theoretical and experimental equations of state of orthorhombic boron g-B₂₈. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .

33

Rulis P., Wang L., Walker B., Ching W.-Y. Spectral analysis of the electronic structure of g-B₂₈. . . . . . . . . . . . . . . . .

40

Zhou X.-F., Tian Y., Wang H.-T. Large shear strength enhancement of gamma-boron by normal compression. . .

50

Veprek S., Zhang R. F., Argon A. S. Mechanical properties and hardness of boron and boron-rich solids. . . . . . . .

60

Kurakevych O. O., Solozhenko V. L. Experimental study and critical review of structural, thermodynamic and mechanical properties of superhard refractory boron suboxide B₆O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

75

Index of papers published in the Sverkhtverdye Materialy Journal in 2011. . . . . . .

84