| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for evaluating a single-crystal ingot, capable of accurately inferring a profile of oxygen concentration in the ingot, while leaving the ingot as it is, and dealing with a local change of the concentration, and to provide a method for cutting the ingot using the same. SOLUTION: The method for evaluating the single-crystal ingot comprises the steps of cylindrically grinding the single-crystal ingot 20, then introducing infrared rays 6 from the lateral direction of the ingot 20, while leaving the ingot 20 as it is, and measuring the oxygen concentration in the ingot 20 from its absorption.</p> |
