Table 2.
Ionic radius for different coordinations, x max with corresponding reference, and average of the xmax values for each dopant.
| i.r.(VI) | i.r.(VII) | i.r.(VIII) | Xmax | References | Average xmax | |
|---|---|---|---|---|---|---|
| Lu | 0.861 | – | 0.977 | 0.35(5) | Grover et al., 2008 | 0.375(25) |
| 0.375(25) | Malecka et al., 2008 | |||||
| 0.40(5) | Artini et al., 2016 | |||||
| Yb | 0.868 | 0.925 | 0.985 | 0.48(5) | Bevan and Summerville, 1979 | 0.489(57) |
| 0.55(5) | Mandal et al., 2007 | |||||
| 0.438(63) | Coduri, 2013 | |||||
| Tm | 0.99 | - | 0.994 | 0.45(5) | Mandal et al., 2007 | – |
| Er | 0.89 | 0.945 | 1.004 | 0.34(5) | Horlait et al., 2011 | – |
| Y | 0.90 | 0.96 | 1.019 | 0.58(5) | Bevan and Summerville, 1979 | 0.421(130) |
| 0.475(25) | Chavan et al., 2004 | |||||
| 0.28(3) | Coduri, 2013 | |||||
| 0.35(5) | Satake et al., 2010 | |||||
| Dy | 0.912 | 0.97 | 1.027 | 0.60(5) | Bevan and Summerville, 1979 | – |
| Gd | 0.938 | 1.00 | 1.053 | 0.54(5) | Bevan and Summerville, 1979 | 0.344(133) |
| 0.125(25) | Nakagawa et al., 2001 | |||||
| 0.27(2) | Scavini et al., 2015 | |||||
| 0.225(25) | Kossoy et al., 2013 | |||||
| 0.425(25) | Banerji et al., 2009 | |||||
| 0.35(5) | Artini et al., 2012 | |||||
| 0.37(2) | Chen and Navrotsky, 2006 | |||||
| 0.45(5) | Grover and Tyagi, 2004 | |||||
| Eu | 0.947 | 1.01 | 1.066 | 0.275(25) | Shuk et al., 2000 | 0.35(11) |
| 0.425(25) | Mandal et al., 2006 | |||||
| Sm | 0.958 | 1.02 | 1.079 | 0.58(5) | Bevan and Summerville, 1979 | 0.41(13) |
| 0.45(5) | Mandal et al., 2006 | |||||
| 0.45(5) | Nitani et al., 2004 | |||||
| 0.32(2) | Coduri et al., 2018 | |||||
| 0.25(5) | Artini et al., 2015 | |||||
| Nd | 0.983 | 1.09 | 1.109 | 0.56(5) | Bevan and Summerville, 1979 | 0.448(60) |
| 0.513(13) | Chavan et al., 2005 | |||||
| 0.425(25) | Ikuma et al., 2005 | |||||
| 0.35(5) | Hagiwara et al., 2009 | |||||
| 0.438(63) | Coduri, 2013 | |||||
| 0.45(5) | Zhang et al., 2016 | |||||
| 0.405(15) | Horlait et al., 2011 | |||||
| 0.45(5) | Nitani et al., 2004 | |||||
| La | 1.032 | 1.10 | 1.16 | 0.68(5) | Bevan and Summerville, 1979 | 0.61(11) |
| 0.658(25) | Andrievskaya et al., 2011 | |||||
| 0.45(5) | Bellière et al., 2006 | |||||
| 0.65(5) | Wilkes et al., 2003 |
xmax is defined as the intermediate point between the last fluorite and first non-fluorite composition observed. The esd in bracket is half of the composition step between two consecutive points.