Figure 2.
Lattice parameters a vs. c of α-Fe2O3 calculated for studied samples and in PDF cards: No. 00-033-0664 (1), No. 01-079-0007 (2), No. 01-076-4579 (3), No.01-089-0599 (4), No. 00-001-1053 (5) and No. 01-089-8103 (6).
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