We present the experimental results of the effect hydrostatic pressure up to P ≤ 7 GPa applied at the room temperatures in diluted magnetic semiconductor Cd1−xMnxGeAs2 (x = 0.06 − 0.3). We have found the pressure areas at which anomalies in magnetic properties were observed. Induced by hydrostatic pressure at P > 1.5 GPa magnetic phase transitions, interpreted as metamagnetic transition, were observed. The transitions from magnetic-ordered into magnetic disordered phases in region P > 4.1 GPa on the pressure dependences of relative volume compressibility were detected. We estimated the values of bulk modulus and volume magnetostriction. It is shown that high pressures significantly decrease the Curie temperature with values dTC/dP ≈ (−14.0 ÷ −6.8) K/GPa.
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14 May 2012
Research Article|
May 15 2012
Anomalies of magnetic properties and magnetovolume effect in Cd1−xMnxGeAs2 at hydrostatic pressure
A. Yu. Mollaev;
A. Yu. Mollaev
1
Institute of Physics, Daghestan Scientific Center of the Russian Academy of Sciences
, 367003 Makhachkala, Russia
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I. K. Kamilov;
I. K. Kamilov
1
Institute of Physics, Daghestan Scientific Center of the Russian Academy of Sciences
, 367003 Makhachkala, Russia
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R. K. Arslanov;
R. K. Arslanov
1
Institute of Physics, Daghestan Scientific Center of the Russian Academy of Sciences
, 367003 Makhachkala, Russia
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T. R. Arslanov;
T. R. Arslanov
a)
1
Institute of Physics, Daghestan Scientific Center of the Russian Academy of Sciences
, 367003 Makhachkala, Russia
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U. Z. Zalibekov;
U. Z. Zalibekov
1
Institute of Physics, Daghestan Scientific Center of the Russian Academy of Sciences
, 367003 Makhachkala, Russia
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V. M. Novotortsev;
V. M. Novotortsev
2
Institute of Common and Inorganic Chemistry of the Russian Academy of Sciences
, 119991 Moscow, Russia
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S. F. Marenkin;
S. F. Marenkin
2
Institute of Common and Inorganic Chemistry of the Russian Academy of Sciences
, 119991 Moscow, Russia
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V. M. Trukhan
V. M. Trukhan
3
Joint Institute of Solid State Physics and Semiconductors, National Academy of Sciences of Belarus
, 220072 Minsk, Belarus
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a)
Author to whom correspondence should be addressed. Electronic mail: arslanovt@gmail.com.
Appl. Phys. Lett. 100, 202403 (2012)
Article history
Received:
April 06 2012
Accepted:
May 01 2012
Citation
A. Yu. Mollaev, I. K. Kamilov, R. K. Arslanov, T. R. Arslanov, U. Z. Zalibekov, V. M. Novotortsev, S. F. Marenkin, V. M. Trukhan; Anomalies of magnetic properties and magnetovolume effect in Cd1−xMnxGeAs2 at hydrostatic pressure. Appl. Phys. Lett. 14 May 2012; 100 (20): 202403. https://doi.org/10.1063/1.4718419
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