2014
DOI: 10.1016/j.jallcom.2013.09.187
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Transparent La2−xGdxZr2O7 ceramics obtained by combustion method and vacuum sintering

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Cited by 37 publications
(23 citation statements)
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“…As the ionic radius of Gd 3+ is smaller than that of La 3+ , the substitution of La 3+ by Gd 3+ shortens the oxygen‐metal bond, which leads to broader energy band ( E g ). Thus, the cut‐off edge shifted to UV region (λ = hc / E g ) . Compared with the Eu 3+ ‐doped annealed ceramics in this work, there was almost no change in the cut‐off edge (except for the x = 0 ceramic), demonstrating that the blue‐shift of cut‐off edge for the Eu 3+ ‐doped annealed ceramics had the same reason.…”
Section: Resultscontrasting
confidence: 61%
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“…As the ionic radius of Gd 3+ is smaller than that of La 3+ , the substitution of La 3+ by Gd 3+ shortens the oxygen‐metal bond, which leads to broader energy band ( E g ). Thus, the cut‐off edge shifted to UV region (λ = hc / E g ) . Compared with the Eu 3+ ‐doped annealed ceramics in this work, there was almost no change in the cut‐off edge (except for the x = 0 ceramic), demonstrating that the blue‐shift of cut‐off edge for the Eu 3+ ‐doped annealed ceramics had the same reason.…”
Section: Resultscontrasting
confidence: 61%
“…Cracks were observed for the x = 2.0 ceramic after the annealing process, and the similar result was also reported in our previous article. 17 As Gd 2 Zr 2 O 7 lies at the critical point between defective fluorite structure and pyrochlore structure, and the order-disorder transition temperature of Gd 2 Zr 2 O 7 from pyrochlore to defective fluorite structure is 1530°C or 1575°C, the x = 2.0 ceramic is unstable. 20,21 Phase transition might occur under the vacuum sintering process, which would create residual stress in the ceramics.…”
Section: J Ournalmentioning
confidence: 99%
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“…Their mainly potential applications are scintillator hosts as most of them have high density and effective atomic number, which would gain higher X-ray or γ-ray stopping power. Then, many transparent ceramics with the composition of A 2 B 2 O 7 were fabricated in recent years, such as La 2 Hf 2 O 7 [41,42], La 2-x Gd x Hf 2 O 7 [43,44], La 2 Zr 2 O 7 [45], Nd 2 Zr 2 O 7 [46], La 2-x Gd x Zr 2 O 7 [47,48], La 2-x Lu x Zr 2 O 7 [49], and Lu 2 Ti 2 O 7 [50]. Also, rare earth ion doped A 2 B 2 O 7 system transparent ceramics [42,[51][52][53][54] were fabricated to study their luminescent properties.…”
Section: Introduction mentioning
confidence: 99%