Fig. 1. XRD comparison chart of a: Al₂O₃:La₂O₃=0.9:0.1; b: Al₂O₃:La₂O₃=0.6:0.4; c: Al₂O₃:La₂O₃=0.2:0.8; d: Al₂O₃:La₂O₃=0.05:0.95

Fig. 2. H-W fitting diagram of (a) 1^# sample, (b) 2^# sample, (c) 3^# sample, (d) 4^# sample

Fig. 3. 1^#—4^# sample grain size change

Fig. 4. Raman spectrum of alumina-lanthanum oxide sintering of 1^# sample—5^# sample