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Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons

Yıl 2020, Cilt: 15 Sayı: 1, 20 - 28, 18.01.2020

Öz

     An effective method of studying the properties
of zonal magnets is to affect the magnet by the
- exchange field. The
investigation of the impact of an
- exchange
field on the behavior of zonal metamagnetic
 was the
objectives of this work. Gadolinium was used as a magnetizing element to
exclude the effect of a crystal field. Therefore, in this work, the magnetic
properties of the system
 were
studied.
The
measurement results showed that, as
 is substituted for ,
the field
 decreases monotonically. The magnetization of
the
-subsystem
exceeds that of the
-subsystem
,
then the magnetic moment of the
-subsystem
is oriented parallel to the external field, while the moment of the
-subsystem
is antiparallel to the latter, here the
 exchange interaction leads to a decrease in
the metamagnetic transition field. The exchange field
 helps the external field with magnetization.
When
,
the magnetization of the
-subsystem
is oriented along the field. The external field does not magnetize the
-subsystem,
but demagnetizes it, and then to be magnetized parallel to this field. When
these compounds become magnetically ordered, the magnetization degrees of
-
и
-subsystems
equalize in the concentration zone. The dependence of the magnetic moment of
the compositions of the
-subsystem
on the content of gadoliniums increases linearly with the increasing content of
gadolinium, which is due to the increasing effective field affecting the
-subsystem.
The data for the systems with different content of aluminum within an error are
on the line.

Kaynakça

  • [1] Levitin, R.Z. and Markosyan, A.S., (1988). Usp. Fiz. Nauk 155, 623. (Sov. Phys. Usp. 31:730).
  • [2] Goto, T., Fukamichi, K., Sakakibara, T., and Komatsu, H., (1989). Sol. St. Comm. V. 72. P. 945.
  • [3] Murata, K., Fukamichi, K., Komatsu, H., at al., (1991). J. Phys.: Condens. Mater. V. 3. P. 2515.
  • [4] Bloch, D., Edwards, D.M., Shimisu, M., and Voiron, J., (1975). J. Phys. F. V. 5. P. 1217.
  • [5] Kirchmaier, K.R. and Poldi, K.A., (1982). Physics and Chemistry of Rare-Earth Elements, K.A. Gschneider and L. Airing, eds., Moscow: Metallurgiya.
  • [6] Duc, N.H., Hien, T.D., Brommer, P.E., and France, J.J.M., (1998). L. Phys. F.V. 18. P. 275.
  • [7] Aleksandryan, V.V., Lagutin, A.S., Levitin, R.Z., at al., (1985). Zh. Eksp. Teor. Fiz. 89, 271. Sov. Phys. JETP 62, 153.
  • [8] Ballou, R., Barbara, B., Gamishidze, Z.M., Lemaire, R., Levitin, R.Z., and Markosyan, A.S., (1993). J. Magn. Magn. Mater. 119, 294.
  • [9] Goto, T., Aruga Katori, H., Koui, K., Levitin, R.Z., Markosyan, A.S., and Gamishidze, Z.M., (1994). Field-induced Transitions of Y_(1-t) 〖Gd〗_t 〖(〖Co〗_(1-0.93) 〖Al〗_0.07)〗_2 in Ultrahigh Magnetic Fields up to 100T, Phys B 201.
Yıl 2020, Cilt: 15 Sayı: 1, 20 - 28, 18.01.2020

Öz

An effective method of studying the properties of zonal magnets is to affect the magnet by the 𝑓-𝑑 exchange field. The investigation of the impact of an 𝑓-𝑑 exchange field on the behavior of zonal metamagnetic 𝑌𝐶𝑜2 was the objectives of this work. Gadolinium was used as a magnetizing element to exclude the effect of a crystal field. Therefore, in this work, the magnetic properties of the system 𝑌1−𝑡𝐺𝑑𝑡(𝐶𝑜1−𝑥𝐴ℓ𝑥)2 were studied. The measurement results showed that, as 𝑌 is substituted for 𝐺𝑑, the field 𝐻𝑚 decreases monotonically. The magnetization of the 𝑑-subsystem exceeds that of the 𝑓-subsystem (𝑀𝑑>𝑡𝑀𝑓), then the magnetic moment of the 𝑑-subsystem is oriented parallel to the external field, while the moment of the 𝑓-subsystem is antiparallel to the latter, here the 𝑓−𝑑 exchange interaction leads to a decrease in the metamagnetic transition field. The exchange field 𝐻𝑓−𝑑 helps the external field with magnetization. When 𝑀𝑑<𝑡𝑀𝑓, the magnetization of the 𝑓-subsystem is oriented along the field. The external field does not magnetize the 𝑑-subsystem, but demagnetizes it, and then to be magnetized parallel to this field. When these compounds become magnetically ordered, the magnetization degrees of 𝑓- и 𝑑-subsystems equalize in the concentration zone. The dependence of the magnetic moment of the compositions of the 𝑑-subsystem on the content of gadoliniums increases linearly with the increasing content of gadolinium, which is due to the increasing effective field affecting the 𝑑-subsystem. The data for the systems with different content of aluminum within an error are on the line.

Kaynakça

  • [1] Levitin, R.Z. and Markosyan, A.S., (1988). Usp. Fiz. Nauk 155, 623. (Sov. Phys. Usp. 31:730).
  • [2] Goto, T., Fukamichi, K., Sakakibara, T., and Komatsu, H., (1989). Sol. St. Comm. V. 72. P. 945.
  • [3] Murata, K., Fukamichi, K., Komatsu, H., at al., (1991). J. Phys.: Condens. Mater. V. 3. P. 2515.
  • [4] Bloch, D., Edwards, D.M., Shimisu, M., and Voiron, J., (1975). J. Phys. F. V. 5. P. 1217.
  • [5] Kirchmaier, K.R. and Poldi, K.A., (1982). Physics and Chemistry of Rare-Earth Elements, K.A. Gschneider and L. Airing, eds., Moscow: Metallurgiya.
  • [6] Duc, N.H., Hien, T.D., Brommer, P.E., and France, J.J.M., (1998). L. Phys. F.V. 18. P. 275.
  • [7] Aleksandryan, V.V., Lagutin, A.S., Levitin, R.Z., at al., (1985). Zh. Eksp. Teor. Fiz. 89, 271. Sov. Phys. JETP 62, 153.
  • [8] Ballou, R., Barbara, B., Gamishidze, Z.M., Lemaire, R., Levitin, R.Z., and Markosyan, A.S., (1993). J. Magn. Magn. Mater. 119, 294.
  • [9] Goto, T., Aruga Katori, H., Koui, K., Levitin, R.Z., Markosyan, A.S., and Gamishidze, Z.M., (1994). Field-induced Transitions of Y_(1-t) 〖Gd〗_t 〖(〖Co〗_(1-0.93) 〖Al〗_0.07)〗_2 in Ultrahigh Magnetic Fields up to 100T, Phys B 201.
Toplam 9 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Mühendislik
Bölüm Makaleler
Yazarlar

Zaur Gamishidze 0000-0001-8101-9704

Yayımlanma Tarihi 18 Ocak 2020
Yayımlandığı Sayı Yıl 2020 Cilt: 15 Sayı: 1

Kaynak Göster

APA Gamishidze, Z. (2020). Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons. Physical Sciences, 15(1), 20-28.
AMA Gamishidze Z. Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons. Physical Sciences. Ocak 2020;15(1):20-28.
Chicago Gamishidze, Zaur. “Phenomenom of The Magnetic Instabiliti in Some Magnets With Collectivized Electrons”. Physical Sciences 15, sy. 1 (Ocak 2020): 20-28.
EndNote Gamishidze Z (01 Ocak 2020) Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons. Physical Sciences 15 1 20–28.
IEEE Z. Gamishidze, “Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons”, Physical Sciences, c. 15, sy. 1, ss. 20–28, 2020.
ISNAD Gamishidze, Zaur. “Phenomenom of The Magnetic Instabiliti in Some Magnets With Collectivized Electrons”. Physical Sciences 15/1 (Ocak 2020), 20-28.
JAMA Gamishidze Z. Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons. Physical Sciences. 2020;15:20–28.
MLA Gamishidze, Zaur. “Phenomenom of The Magnetic Instabiliti in Some Magnets With Collectivized Electrons”. Physical Sciences, c. 15, sy. 1, 2020, ss. 20-28.
Vancouver Gamishidze Z. Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons. Physical Sciences. 2020;15(1):20-8.