Top-seeded solution growth and characterization of Raman crystal LiVMoO6. Issue 109 (10th November 2016)

• Record Type: Journal Article
• Authors: Wang, Zheng; Wu, Qian; Zhu, Min; Gao, Zeliang; Tian, Xiangxin; Xia, Shengqing; Sun, Youxuan; Tao, Xutang
• Is Part Of: RSC advances. Volume 6:Issue 109(2016)
• Page Start: 107519
• Page End: 107524
• Publication Date: 2016-11-10
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra24321e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Single crystal LiVMoO6, with dimensions up to 20 mm × 15 mm × 12 mm, has been grown successfully for the first time from a high-temperature solution with MoO3 as a flux. Abstract : Single crystal LiVMoO6, with dimensions up to 20 mm × 15 mm × 12 mm, has been grown successfully for the first time from a high-temperature solution with MoO3 as a flux. LiVMoO6 crystalizes in the monoclinic system with space group C 2/ m (no. 12) and unit cell parameters of a = 9.3531(9) Å, b = 3.6477(4) Å, c = 6.647(4) Å, β = 111.643° and Z = 2. The crystal structure consists of MO6 (M = Mo and V) and LiO6 octahedrons mutually combined via corner sharing to form a 3D network. The as-grown LiVMoO6 crystal has well-developed faces with major forms {1−11}, {−1−11}, {001}, {100}, {11−1}, and {−11−1}. The crystal exhibits good transmittance from 490 to 4950 nm. High-resolution X-ray diffraction (HRXRD) shows that the full-width at half-maximum (fwhm) of the rocking curve is 47.22′′, indicating high crystal quality. The refractive index coordinate is established using a polarizing microscope. Spontaneous Raman spectra along the Z -axis with different configurations exhibit strong Raman shifts at 963.7 cm −1 and 830.5 cm −1, which are comparable to those of crystalline YVO4 . The results indicate that LiVMoO6 should be an excellent Raman crystal.