摘要:

The pressure‐temperature phase diagram of InSb is refined to show the boundaries between the high‐pressure tetragonal (InSb II) and orthorhombic (InSb IV) phases and extended to about 125 kbar to locate the boundary of the new phase (InSb III). The existence of these structures as stable phases in their phase fields is demonstrated by high‐pressure, high‐temperature x‐ray studies and by x‐ray studies and superconductivity measurements on these phases retained by quenching to 77°K. The structures of InSb II and InSb IV are confirmed, and a hexagonal structure for InSb III is proposed. The hexagonal cell has the dimensions (at ∼90 kbar) ofa=6.10 Å andc=5.71 Å with a calculated density of 8.5 g/cc. Values are reported for the compressibility of phases InSb I, InSb III, and InSb IV and for the thermal expansion coefficients, under pressure, of phases InSb I and InSb IV.

ISSN:0021-8979    

DOI:10.1063/1.1657069

出版商:AIP    

年代:1969

数据来源: AIP

摘要:

Recent experimental results on the temperature dependence of the hyperfine field acting on dysprosium impurity nuclei in gadolinium metal are used to check the validity of the molecular field model for such systems, and to reduce the Dy&sngbnd;Gd exchange coupling parameter. It is concluded that the molecular field model is able to explain successfully the experimental observations. The exchange field acting on dysprosium ions embedded in gadolinium metal, &bgr;He(0°K) /k=110±5°K, is approximately equal to the field acting on the gadolinium ions (&bgr;He(0°K) / k=98°K).

ISSN:0021-8979    

DOI:10.1063/1.1657070

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657071

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657072

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657073

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657074

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657075

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657076

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657077

出版商:AIP    

年代:1969

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1657078

出版商:AIP    

年代:1969

数据来源: AIP