Acoustic-phonon dispersion in CdTe at 7.5 GPa

被引：22

作者：

Krisch, MH

Mermet, A

San Miguel, A

Sette, F

Masciovecchio, C

Ruocco, G

Verbeni, R

机构：

[1] UNIV AQUILA, I-67100 LAQUILA, ITALY

[2] INFM, I-67100 LAQUILA, ITALY

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.56.8691

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dispersion of longitudinal acoustic phonons has been measured by inelastic x-ray scattering in the sodium-chloride phase of CdTe at 7.5 GPa. A substantial increase of the phonon frequencies with respect to the dispersion curve at ambient pressure is observed in the momentum transfer region Q=3-10 nm(-1): This corresponds to an increase of the sound velocity from 3100 m/s to 5100+/-300 m/s, in good agreement with extrapolations based on the equation of state.

引用

页码：8691 / 8694

页数：4

共 15 条

[1] NEUTRON POWDER DIFFRACTION ABOVE 10-GPA [J].

BESSON, JM ;

NELMES, RJ ;

HAMEL, G ;

LOVEDAY, JS ;

WEILL, G ;

HULL, S .

PHYSICA B, 1992, 180 :907-910

[2] MODE GRUNEISEN PARAMETER DISPERSION-RELATION OF RBI DETERMINED BY NEUTRON-SCATTERING [J].

BLASCHKO, O ;

ERNST, G ;

QUITTNER, G ;

KRESS, W ;

LECHNER, RE .

PHYSICAL REVIEW B, 1975, 11 (10) :3960-3965

[3] Changes of phonon dispersion in graphite at high pressure [J].

Ivanov, AS ;

Goncharenko, IN ;

Somenkov, VA ;

Braden, M .

HIGH PRESSURE RESEARCH, 1995, 14 (1-3) :145-154

[4] NEUTRON POWDER DIFFRACTION AT PRESSURES BEYOND 25 GPA [J].

KLOTZ, S ;

BESSON, JM ;

HAMEL, G ;

NELMES, RJ ;

LOVEDAY, JS ;

MARSHALL, WG ;

WILSON, RM .

APPLIED PHYSICS LETTERS, 1995, 66 (14) :1735-1737

[5] Transverse acoustic phonons of germanium up to 9.7 GPa by neutron inelastic scattering [J].

Klotz, S ;

Besson, JM ;

Braden, M ;

Karch, K ;

Bechstedt, F ;

Strauch, D ;

Pavone, P .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1996, 198 (01) :105-113

[6] A perfect crystal X-ray analyser with 1.5 meV energy resolution [J].

Masciovecchio, C ;

Bergmann, U ;

Krisch, M ;

Ruocco, G ;

Sette, F ;

Verbeni, R .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1996, 117 (03) :339-340

[7] A perfect crystal X-ray analyser with meV energy resolution [J].

Masciovecchio, C ;

Bergmann, U ;

Krisch, M ;

Ruocco, G ;

Sette, F ;

Verbeni, R .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1996, 111 (1-2) :181-186

[8] Inelastic neutron scattering from single crystal Zn under high pressure [J].

Morgan, JG ;

VonDreele, RB ;

Wochner, P ;

Shapiro, SM .

PHYSICAL REVIEW B, 1996, 54 (02) :812-818

[9] PHASE-TRANSITIONS IN CDTE TO 28 GPA [J].

NELMES, RJ ;

MCMAHON, MI ;

WRIGHT, NG ;

ALLAN, DR .

PHYSICAL REVIEW B, 1995, 51 (22) :15723-15731

[10] ULTRAHIGH PRESSURE DIAMOND-ANVIL CELL AND SEVERAL SEMICONDUCTOR PHASE-TRANSITION PRESSURES IN RELATION TO FIXED-POINT PRESSURE SCALE [J].

PIERMARINI, GJ ;

BLOCK, S .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1975, 46 (08) :973-979

← 1 2 →