ChemInform Abstract: Synthesis, Structural and Vibrational Analysis of LiMBO3 Orthoborates ( M: Mg, Co, Zn).

Abstract

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Development of LiMgBO3:Tb3+ as a new generation material for thermoluminescence based personnel neutron dosimetry

“…The spectrum showed the presence of about 15 different active IR bands in the range 400-2000 cm À1 , which matched very well with different modes as reported in the literature. [45][46][47][48] The bands within 1000-1550 cm À1 (1213 cm À1 , 1268 cm À1 and 1439 cm À1 and 1510 cm À1 ) were attributed to the asymmetric stretching vibrations of the B-O bond in BO 3 whereas, the band at 864 cm À1 is due to the symmetric stretching of the B-O bond in BO 3 . The IR bands within 650-850 cm À1 (711 cm À1 , 723 cm À1 , 778 cm À1 and 800 cm À1 ) arise due to the out-of-plane bending vibrations of the B-O bond and those within 500-600 cm À1 (530 cm À1 , 577 cm À1 and 651 cm À1 ) correspond to the in-plane deformation modes of the B-O bond.…”

Synthesis and Characterization of the LiMnBO3–LiCoBO3 Solid Solution and Its Use as a Lithium-Ion Cathode Material

“…First, each orthoborate was synthesized separately with a procedure close to the one used by Belkebir et al to synthesize Co 2 B 2 O 5 . 13 To obtain Co 3 (BO 3 ) 2 , B 2 O 3 and CoC 2 O 4 •2H 2 O were ball-milled and heated at 800 °C for 6 h in air (+5/−10 °C/min). For Mn 3 (BO 3 ) 2 , B 2 O 3 and MnC 2 O 4 • 2H 2 O were also ball-milled for 5 h at 500 rpm before being heated at 700 °C for 6 h in an argon atmosphere (+5/−10 °C/ min).…”

Influence of B2O3 Additive on Microwave Dielectric Properties of Li2ZnTi3O8 Ceramics for LTCC Applications

“…By increasing the B 2 O 3 content above 0.5 wt%, a sufficient amount of the liquid phase forms, enhancing the densification process and the grain size. 25,26 The intensity of the LiZnBO 3 peak increased with increasing sintering temperature. These results explain the trend in relative density of the LZT ceram- Figure 4a shows the relative permittivity of the LZT ceramics prepared at 875°C with varying quantities of B 2 O 3 .…”

“…When the sintering temperature was above 900°C, an obvious additional peak was observed, which indicates that the LiZnBO 3 phase (JCPDS-832341) was formed. 25,26 The intensity of the LiZnBO 3 peak increased with increasing sintering temperature. The presence of a second phase in a ceramic degrades its microwave dielectric characteristics.…”