Growth of LiB3O5 single crystals in the Li2O-B2O3 system

Growth and morphology of large LiB3O5 single crystals

“…The use of B 2 O 3 as a flux was first suggested in [1] and had remained the solvent of choice to industrially produce LBO single crystals for over a decade. Most of the difficulties encountered with this particular growth process were related to the high viscosity of the flux, which has been reported to increase during crystallization, in the range of $2000-20,000 cP [3]. It was shown that inclusion and crack-free crystals could be grown only from a relatively narrow range in the LBO-B 2 O 3 system, namely 72-82 wt% LBO, with a corresponding viscosity of 2000-4000 cP.…”

Growth of nonlinear optical crystal CsB3O5 from self-flux solution

“…It was found that the viscosity at T m rises gradually with an increase in the B 2 O 3 concentration. A similar tendency has also been reported in regard to the Li 2 O-B 2 O 3 system [7]. The viscosity of alkali borate melts is known to be simply a function of the O/B ratio, independent of the kind of alkali ions [8].…”

Investigations on the growth of LiB3O5 crystal by top-seeded solution growth technique

“…The crystal growth was carried out by the TSSG technique, using a 50 mm diameter Pt crucible and the starting charge consisting of polycrystalline LBO material and B 2 O 3 powder taken in the ratio of 80:20 percent by weight. This charge composition has been reported to yield crystals without macro-inclusions and cracks [2]. The seeding with a Pt wire could easily be achieved under certain conditions [5].…”

“…The growth of LiB 3 O 5 (LBO) crystals has been carried out by top-seeded solution growth (TSSG) technique employing boron oxide-rich charges [1][2][3][4]. Recently, we had investigated the problem of seeding the solution with a platinum wire [5].…”