Variants of the X-phase in the Mn-Co-Ge system

被引：0

作者：

Shtender, Vitalii ^{[1
]}

Larsen, Simon R. ^{[1
]}

Sahlberg, Martin ^{[1
]}

机构：

[1] Department of Chemistry, Ångström Laboratory, Uppsala University, Box 538, Uppsala,75121, Sweden

来源：

Acta Crystallographica Section C: Structural Chemistry | 2021年 / 77卷

关键词：

Germanium compounds - Manganese - X ray diffraction - Energy dispersive spectroscopy - Manganese compounds - Silicon - Silicon compounds - Cobalt - Single crystals - Intermetallics;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We report two new variants of the X-phase (orthorhombic, space group Pnnm) derived from the Mn-Co-Ge system. Two compositionally related crystals were investigated by means of single-crystal X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The Mn14.9Co15.5Ge6.6 and Mn14Co16.2Ge6.8 intermetallic compounds are part of the homogeneity region of the X-phase and adopt the Mn14(Mn0.11Co0.64Si0.25)23 structure type. The composition obtained from refinement of the XRD data is in agreement with the EDS results. In the present study, chemical disorder was only detected on the 8h positions. The ordering is compared with other members of the X-phase family and shows that the degree of disordering depends on the chemical composition. No completely ordered variants of the X-phase have yet been reported. © 2021.

引用

页码：176 / 180

共 50 条

[31] The physical properties of sintered X-phase sialon prepared by silicothermal reaction bonding
Sheppard, CM
MacKenzie, KJD
Ryan, MJ
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1998, 18 (03) : 185 - 191
[32] HARDNESS, INDENTATION FRACTURE-TOUGHNESS AND COMPOSITIONAL FORMULA OF X-PHASE SIALON
ANYA, CC
HENDRY, A
JOURNAL OF MATERIALS SCIENCE, 1994, 29 (02) : 527 - 533
[33] STRUCTURE OF X-PHASE FORMED DURING AGING OF TITANIUM NICKELIDE BASE ALLOYS
KHUNDZHUA, AG
ZAKHAROVA, MI
SOROKIN, AV
FIZIKA METALLOV I METALLOVEDENIE, 1986, 61 (01): : 109 - 114
[34] SELF-REVERSAL AND X-PHASE IN ILMENITE-HEMATITE SOLID-SOLUTION
HOFFMAN, K
TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1972, 53 (04): : 358 - +
[35] PHASE-DIAGRAM OF THE CO-MN-O SYSTEM
GOLIKOV, YV
INORGANIC MATERIALS, 1988, 24 (07) : 975 - 979
[36] PHASE SEPARATION IN GE - SYSTEM STUDIED BY X-RAY PHOTOEMISSION
RIBBING, CG
LINDAU, I
SPICER, WE
PHYSICS LETTERS A, 1973, A 43 (05) : 407 - 408
[37] Measurement of phase equilibria in Ti-Co-Ge ternary system
Hu, K.
Dong, S. S.
Shen, C.
Liu, H. S.
Peng, H. L.
Cai, G. M.
Jin, Z. P.
JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 793 : 653 - 661
[38] Magnetically induced phase separation in the Co-Ge binary system
Qin, GW
Oikawa, K
Kainuma, R
Ishida, K
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 241 (01) : L1 - L5
[39] Nb28Ni33.5Sb12.5, a new representative of the X-phase
Wang, MT
Mar, A
JOURNAL OF SOLID STATE CHEMISTRY, 2001, 160 (02) : 450 - 459
[40] Structural Relation Between the X-Phase and Other Phases in Ni2MnGa
Kakeshita, Tomoyuki
Fukuda, Takashi
Terai, Tomoyuki
Osakabe, Toyotaka
Kakurai, Kazuhisa
FERROMAGNETIC SHAPE MEMORY ALLOYS II, 2010, 635 : 49 - +

← 1 2 3 4 5 →