ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range
The aim of the work is to investigate ZnAs₂ electrical conductivity at cyclic pressure treatment in the range of 20−50 GPa, to determine concrete values of pressure, at which the changes take place in this material, and to reveal peculiarities of behaviour at pressures up to 50 GPa.
Збережено в:
| Дата: | 2007 |
|---|---|
| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Донецький фізико-технічний інститут ім. О.О. Галкіна НАН України
2007
|
| Назва видання: | Физика и техника высоких давлений |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/70291 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range / A.N. Babushkin, S.V. Perevalova, A.Y. Mollaev, L.A. Saypulaeva, S.F. Marenkin, V.A. Morozova // Физика и техника высоких давлений. — 2007. — Т. 17, № 1. — С. 67-69. — Бібліогр.: 3 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-70291 |
|---|---|
| record_format |
dspace |
| spelling |
irk-123456789-702912014-11-03T03:01:50Z ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range Babushkin, A.N. Perevalova, S.V. Mollaev, A.Y. Saypulaeva, L.A. Marenkin, S.F. Morozova, V.A. The aim of the work is to investigate ZnAs₂ electrical conductivity at cyclic pressure treatment in the range of 20−50 GPa, to determine concrete values of pressure, at which the changes take place in this material, and to reveal peculiarities of behaviour at pressures up to 50 GPa. 2007 Article ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range / A.N. Babushkin, S.V. Perevalova, A.Y. Mollaev, L.A. Saypulaeva, S.F. Marenkin, V.A. Morozova // Физика и техника высоких давлений. — 2007. — Т. 17, № 1. — С. 67-69. — Бібліогр.: 3 назв. — англ. 0868-5924 PACS: 61.50.Ks http://dspace.nbuv.gov.ua/handle/123456789/70291 en Физика и техника высоких давлений Донецький фізико-технічний інститут ім. О.О. Галкіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
The aim of the work is to investigate ZnAs₂ electrical conductivity at cyclic pressure treatment in the range of 20−50 GPa, to determine concrete values of pressure, at which the changes take place in this material, and to reveal peculiarities of behaviour at pressures up to 50 GPa. |
| format |
Article |
| author |
Babushkin, A.N. Perevalova, S.V. Mollaev, A.Y. Saypulaeva, L.A. Marenkin, S.F. Morozova, V.A. |
| spellingShingle |
Babushkin, A.N. Perevalova, S.V. Mollaev, A.Y. Saypulaeva, L.A. Marenkin, S.F. Morozova, V.A. ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range Физика и техника высоких давлений |
| author_facet |
Babushkin, A.N. Perevalova, S.V. Mollaev, A.Y. Saypulaeva, L.A. Marenkin, S.F. Morozova, V.A. |
| author_sort |
Babushkin, A.N. |
| title |
ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range |
| title_short |
ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range |
| title_full |
ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range |
| title_fullStr |
ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range |
| title_full_unstemmed |
ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range |
| title_sort |
znas₂ electrical conductivity at cyclic pressure treatment in the 22−50 gpa range |
| publisher |
Донецький фізико-технічний інститут ім. О.О. Галкіна НАН України |
| publishDate |
2007 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/70291 |
| citation_txt |
ZnAs₂ electrical conductivity at cyclic pressure treatment in the 22−50 GPa range / A.N. Babushkin, S.V. Perevalova, A.Y. Mollaev, L.A. Saypulaeva, S.F. Marenkin, V.A. Morozova // Физика и техника высоких давлений. — 2007. — Т. 17, № 1. — С. 67-69. — Бібліогр.: 3 назв. — англ. |
| series |
Физика и техника высоких давлений |
| work_keys_str_mv |
AT babushkinan znas2electricalconductivityatcyclicpressuretreatmentinthe2250gparange AT perevalovasv znas2electricalconductivityatcyclicpressuretreatmentinthe2250gparange AT mollaevay znas2electricalconductivityatcyclicpressuretreatmentinthe2250gparange AT saypulaevala znas2electricalconductivityatcyclicpressuretreatmentinthe2250gparange AT marenkinsf znas2electricalconductivityatcyclicpressuretreatmentinthe2250gparange AT morozovava znas2electricalconductivityatcyclicpressuretreatmentinthe2250gparange |
| first_indexed |
2025-07-05T19:34:56Z |
| last_indexed |
2025-07-05T19:34:56Z |
| _version_ |
1836836817734729728 |
| fulltext |
Физика и техника высоких давлений 2007, том 17, № 1
67
PACS: 61.50.Ks
A.N. Babushkin, S.V. Perevalova, A.Y. Mollaev, L.A. Saypulaeva,
S.F. Marenkin, V.A. Morozova
ZnAs2 ELECTRICAL CONDUCTIVITY AT CYCLIC PRESSURE
TREATMENT IN THE 22−50 GPa RANGE
Ural State University
51 Lenin str., Yekaterinburg, 620083, Russia
E-mail: Alexey.Babushkin@usu.ru, Svetlana.Tatur@mail.ru
The aim of the work is to investigate ZnAs2 electrical conductivity at cyclic pressure
treatment in the range of 20−50 GPa, to determine concrete values of pressure, at which
the changes take place in this material, and to reveal peculiarities of behaviour at pres-
sures up to 50 GPa.
Introduction
ZnAs2 is a compound belonging to semiconductors of АIIВV group, their struc-
ture peculiarity is chemical bonds between As atoms adjacent to the Zn−As bonds.
It is the reason of anisotropy of electrical and optical properties of this material.
The phase transition was found [1] in structurally similar material CdAs2 dur-
ing studying the hydrostatic compression (0–9 GPa) effect. The similar transition
was not found in ZnAs2 at such pressures. That is why we studied this compound
at pressures up to 50 GPa, it was shown [2] that irreversible structural changes
take place at pressures of 35−40 GPa.
It is interesting to investigate the ZnAs2 electrical conductivity behaviour at
cyclic pressure treatment to define more precisely the value of pressure at which
the changes take place.
Experimental details
A sample of the material, which was not earlier affected by high pressure, was
placed into a diamond anvils cell (DAC) where the initial pressure equal to 22 GPa was
generated. Next, the cyclic pressure treatment of the sample was performed, character-
ized by sequential pressure increasing up to some maximal value and decreasing down
to the initial one of 22 GPa. The pressure cycles and corresponding plots of electrical
conductivity dependences on pressure for ZnAs2 are shown in the Table 1.
Физика и техника высоких давлений 2007, том 17, № 1
68
Table
ZnAs2 electrical conductivity pressure dependences at cyclic pressure treatment
№ Cycle 1 Cycle 2 Cycle 3 Cycle 4 Cycle 5
Pmax 27.5 31.5 35 37.5 40
El
ec
tri
ca
l c
on
du
ct
iv
ity
d
ep
en
-
de
nc
es
o
n
pr
es
su
re
№ Cycle 6 Cycle 7 Cycle 8 Cycle 9 Cycle 10
Pmax 42 44 45.5 47 48.5
El
ec
tri
ca
l c
on
du
ct
iv
ity
d
ep
en
-
de
nc
es
o
n
pr
es
su
re
The pressures up to 50 GPa were generated with the help of DAC with
«rounded cone-plane» type anvils [3] made from synthetic polycrystalline dia-
monds «carbonado». The measurements were made at room temperature on the
same samples as were used in article [2].
Results and discussion
ZnAs2 resistance values are lower during increasing pressure up to 3.5 GPa
than those during pressure decrease, as seen from Table 1. The resistance values
are higher during increasing pressure in all other cycles. The ZnAs2 electrical re-
sistance takes the values of about 106 Ω at pressures up to 37.5 GPa, however re-
sistance values decrease by the order of magnitude during pressure removal in the
5-th cycle.
The electrical resistance doesn’t take the initial values during the next steps of
increasing pressure, meaning that the irreversible changes are taking place in this
sample. Thus, the obtained result indicates that the pressure value in the interval
of 35−40 GPa is a point of irreversible change of ZnAs2 electrical conductivity.
Физика и техника высоких давлений 2007, том 17, № 1
69
The electrical resistance of the sample once again decreases by the order of mag-
nitude during pressure increase up to 45.5 GPa. This change also remains irre-
versible that indicates the existence of the second point of irreversible changes of
electrical conductivity at a pressure ~ 45.5 GPa.
Conclusion
Investigation of ZnAs2 electrical conductivity at cyclic pressure treatment in
the range of 22−50 GPa has shown that two points of irreversible changes exist in
this material. The first point, fixed in our previous investigation, is a pressure
value equal to 37.5 GPa and the second one equals 45.5 GPa.
1. A.Y. Mollaev, L.A. Saypulaeva, R.K. Arslanov, S.F. Marenkin, Neorganicheskie mate-
rialy 37, 4, 405 (2001) (in Russian).
2. A.Y. Mollaev, R.K. Arslanov, L.A. Saypulaeva, A.N. Babushkin, T.S. Lyach, S.V. Tatur,
S.F. Marenkin, S.G. Michailov, Fizika i Tekhnika Vysokikh Davlenii 15, № 1, 102
(2005) (in Russian).
3. L.F. Vereschagin, E.N. Yakovlev, B.V. Vinogradov, G.N. Stepanov, K.Kh. Bibaev,
T.J. Alaeva, V.P. Sakun, High Temperatures−High Pressures 6, 99 (1974).
|