X-ray topography study of LiB₃O₅crystals grown from molybdate flux

Abstract

The real defect structure of LiB 3 O 5 crystal grown by a top seeded solution growth method has been observed using x-ray projection and reflective topography. Space mapping of such defects as growth sector boundaries, striation and dislocations have been produced by the topography analysis. The density of the dislocations is as low as <30 cm −2. It has been shown that the dominant part of the dislocations detected is generated in the under-seed zone of the crystal.

Some aspects of lithium–boron melts structuring

“…LBO crystals grown from this medium are characterized by strong striations, low-angle boundaries, etc. [15], unlike the crystals grown using boron oxide with a quasicrystalline structure as a starting material. This implies that the initially ''destructured'' crystallization medium nominally promotes the formation of a more perfect structure of growing crystals.…”

Nucleation, growth and characterization of LiB3O5 single crystals

“…This metastable zone width and other nucleation parameters have been evaluated using the above equations and by substituting J ¼ 1 in Eq. (2). Since the heat of solution (DH S ) in Eq.…”

“…These unique properties, combined with high mechanical stability and nonhygroscopic behaviors, make LBO a suitable candidate for high-power lasers and optical parametric processes [1,2]. Being a peritectic compound, LBO precludes the growth from melt and the sole method is high-temperature solution (HTS) growth technique, the so-called flux growth.…”

Structural field of K2Al2B2O7-family crystals

“…Due to the developed crystal growth technology, presently, many industrial borate crystals are available with large dimensions and a high optical quality [6][7][8][9][10]. Borate compounds show interesting electronic, luminescent and chemical properties and are investigated as prospective photonic and nanotechnology materials [11][12][13][14][15][16][17][18][19].…”