[1] Wang Yuhua, Zhu Ge, Xin Shuangyu, et al. Journal of Rare Earths, 2015, 01: 1.
[8] Zhang Shusheng, Zhuang Weidong, Zhao Chunlei, et al. Journal of Rare Earths, 2004, 22(1): 118.
[9] Tong Yiping, Chen Teng. Spectroscopy and Spectral Analysis, 2013, 33(11): 2930.
[11] Thongtem T, Kungwankunakorn S, Kuntalue B, et al. Journal of Alloys and Compounds, 2010, 506(1): 475.
[12] Cavalcante L, Longo V, Sczancoski J, et al. Cryst Eng Comm, 2012, 14(3): 853.
[13] Lei F, Yan B. Journal of Solid State Chemistry, 2008, 181(4): 855.
[14] Gayatri K Sharma, Rajmuhon N Singh. New J. Chem., 2013, 37, 2784.
[15] Su Yiguo, Li Liping, Li Guangshe. Mater. Chem., 2009, 19: 2316.