| 摘要 |
<p>Artificial calcite monocrystals useful for polarizers or as host crystals for paramagnetic ions eg for lasers are produced by taking eutectic proportions of CaCO3 and an alkali carbonate (Li2CO3), adding excess CaCO3 and heating this in the presence of a calcite seed crystal to just above the eutectic mpt. and then allowing to cool, under a CO2 atmos. of is approx. 1 at press.</p> |
