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- Scopus: eid_2-s2.0-0000632755
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Article: Direct methods in superspace. I. Preliminary theory and test on the determination of incommensurate modulated structures
| Title | Direct methods in superspace. I. Preliminary theory and test on the determination of incommensurate modulated structures |
|---|---|
| Authors | |
| Issue Date | 1987 |
| Publisher | Wiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0108-7673&site=1 |
| Citation | Acta Crystallographica Section A, 1987, v. 43, p. 820-824 How to Cite? |
| Abstract | The validity of the Sayre equation [Sayre (1952). Acta Cryst. 5, 60-65] for (3 + n)-dimensional periodic structures is examined. A practical procedure is proposed for the determination of incommensurate modulated structures; this is an extension of the direct method previously proposed for solving superstructures [Fan Hai-fu, He Lao, Qian Jin-zi & Liu Shi- xiang (1978). Acta Phys. Sin. 27, 554-558]. With the newly proposed method, the phase problem for the main as well as the satellite reflections can be solved directly without making particular assumptions about the modulation. A known incommensurate modulated structure, -Na2CO3, was used in the test. Satisfactory results were obtained. |
| Persistent Identifier | http://hdl.handle.net/10722/138621 |
| ISSN | 2014 Impact Factor: 2.325 |
| ISI Accession Number ID |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Hao, Q | en_US |
| dc.contributor.author | Liu, YW | en_US |
| dc.contributor.author | Fan, HF | en_US |
| dc.date.accessioned | 2011-09-02T06:49:23Z | - |
| dc.date.available | 2011-09-02T06:49:23Z | - |
| dc.date.issued | 1987 | en_US |
| dc.identifier.citation | Acta Crystallographica Section A, 1987, v. 43, p. 820-824 | en_US |
| dc.identifier.issn | 0108-7673 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10722/138621 | - |
| dc.description.abstract | The validity of the Sayre equation [Sayre (1952). Acta Cryst. 5, 60-65] for (3 + n)-dimensional periodic structures is examined. A practical procedure is proposed for the determination of incommensurate modulated structures; this is an extension of the direct method previously proposed for solving superstructures [Fan Hai-fu, He Lao, Qian Jin-zi & Liu Shi- xiang (1978). Acta Phys. Sin. 27, 554-558]. With the newly proposed method, the phase problem for the main as well as the satellite reflections can be solved directly without making particular assumptions about the modulation. A known incommensurate modulated structure, -Na2CO3, was used in the test. Satisfactory results were obtained. | - |
| dc.publisher | Wiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0108-7673&site=1 | en_US |
| dc.relation.ispartof | Acta Crystallographica Section A | en_US |
| dc.title | Direct methods in superspace. I. Preliminary theory and test on the determination of incommensurate modulated structures | en_US |
| dc.type | Article | en_US |
| dc.identifier.email | Hao, Q: qhao@hku.hk | en_US |
| dc.identifier.authority | Hao, Q=rp01332 | en_US |
| dc.identifier.doi | 10.1107/s0108767387098465 | en_US |
| dc.identifier.scopus | eid_2-s2.0-0000632755 | - |
| dc.identifier.volume | 43 | en_US |
| dc.identifier.spage | 820 | en_US |
| dc.identifier.epage | 824 | en_US |
| dc.identifier.isi | WOS:A1987K823600012 | - |
| dc.identifier.issnl | 0108-7673 | - |