DETERMINATION OF STRUCTURE FACTOR PHASE INVARIANTS FROM NON-SYSTEMATIC MANY-BEAM EFFECTS IN CONVERGENT-BEAM PATTERNS

被引：15

作者：

HOIER, R

ZUO, JM

MARTHINSEN, K

SPENCE, JCH

机构：

[1] ARIZONA STATE UNIV,DEPT PHYS,TEMPE,AZ 85287

[2] SINTEF,N-7034 TRONDHEIM,NORWAY

来源：

ULTRAMICROSCOPY | 1988年 / 26卷 / 1-2期

关键词：

Spectroscopy; Electron;

D O I：

10.1016/0304-3991(88)90372-5

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

The determination of structure factor phase invariants and magnitudes from non-systematic many-beam effects in convergent-beam patterns is discussed. Noncentrosymmetric semiconductors are investigated with emphasis on the phase problem. Two-dimensional simulations using three or more beams show that a three-phase invariant may be determined from each of the numerous line intersections observed provided the three-beam coupling is non-negligible. The use of two-dimensional energy-filtered patterns for intensity registration is suggested, and an example using this technique is given.

引用

收藏

页码：25 / 30

页数：6

相关论文

共 14 条

[1] DIRECT MEASUREMENT OF CRYSTALLOGRAPHIC PHASE BY ELECTRON-DIFFRACTION [J].

BIRD, DM ;

JAMES, R ;

PRESTON, AR .

PHYSICAL REVIEW LETTERS, 1987, 59 (11) :1216-1219

[2]

CHANG SL, 1987, CRYSTALLOGR REV, V1, P87

[3] *ZUR DEUTUNG DER KOSSEL-MOLLENSTEDTSCHEN ELEKTRONENINTERFERENZEN KONVERGENTER BUNDEL AN DUNNEN PLATTCHEN .2. [J].

FUES, E .

ZEITSCHRIFT FUR PHYSIK, 1949, 125 (7-10) :531-538

[4] MULTIPLE-BEAM DYNAMIC EFFECTS IN KIKUCHI PATTERNS FROM NATURAL SPINEL [J].

GJONNES, J ;

HOIER, R .

ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, 1969, A 25 :595-&

[5] APPLICATION OF NON-SYSTEMATIC MANY-BEAM DYNAMIC EFFECTS TO STRUCTURE-FACTOR DETERMINATION [J].

GJONNES, J ;

HOIER, R .

ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, 1971, A 27 (JUL1) :313-&

[6]

GJONNES J, 1981, 50 YEARS ELECTRON DI, P408

[7] EFFECTIVE STRUCTURE FACTORS IN MANY-BEAM X-RAY-DIFFRACTION - USE OF THE 2ND BETHE APPROXIMATION [J].

HOIER, R ;

MARTHINSEN, K .

ACTA CRYSTALLOGRAPHICA SECTION A, 1983, 39 (NOV) :854-860

[8] THE INVERSION OF 3-BEAM INTENSITIES FOR SCALAR SCATTERING BY A GENERAL CENTROSYMMETRIC CRYSTAL [J].

HURLEY, AC ;

MOODIE, AF .

ACTA CRYSTALLOGRAPHICA SECTION A, 1980, 36 (JUL) :737-738

[9]

KAMBE K, 1957, J PHYS SOC JPN, V12, P1

[10] MANY-BEAM EFFECTS AND PHASE INFORMATION IN ELECTRON CHANNELING PATTERNS [J].

MARTHINSEN, K ;

HOIER, R .

ACTA CRYSTALLOGRAPHICA SECTION A, 1986, 42 :484-492