Effect of the temperature and magnetic field induced martensitic transformation in bulk Fe45Mn26Ga29 alloy on its electronic structure and physical properties

被引：5

作者：

Kudryavtsev, Y., V ^{[1
]}

Uvarov, N., V ^{[1
]}

Perekos, A. E. ^{[1
]}

Dubowik, J. ^{[2
]}

Kozlova, L. E. ^{[3
]}

机构：

[1] NAS Ukraine, Inst Met Phys, Vernadsky 36, UA-03142 Kiev, Ukraine

[2] PAS, Inst Mol Phys, Smoluchowskiego 17, PL-60179 Poznan, Poland

[3] NAS Ukraine, Inst Magnetism, Vernadsky 36b, UA-03142 Kiev, Ukraine

来源：

INTERMETALLICS | 2019年 / 109卷

关键词：

Heusler alloys; Martensitic transformation; Electronic structure; Magnetic properties; Optical properties; OPTICAL-PROPERTIES; PHASE-TRANSITIONS; HEUSLER;

D O I：

10.1016/j.intermet.2019.03.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Effect of the temperature and magnetic field induced martensitic transformation (MT) on the electronic structure and some physical properties of bulk Fe45.2Mn25.9Ga28.9 Heusler alloy has been investigated. According to the experimental results of DSC, magnetic and transport measurements direct and reverse martensitic transformation without external magnetic field takes place within 194 <= T <= 328 K temperature range with a hysteresis up to Delta T approximate to 100 K defined as Delta T = A(f,s) - M-s,M-f, where A(f,s) and M-s,M-f are the critical temperatures of direct and reverse martensitic transformation. External magnetic field of mu H-0 = 5 T causes a high-temperature shift of MT temperatures. MT from parent austenite L2(1) phase to martensitic tetragonally distorted L2(1) one (i.e. to L1(0)) causes significant changes in the electronic structure of alloy, a drastic increase in alloy magnetization, a decrease in the alloy resistivity, and a reversal of the sign of the temperature coefficient of resistivity from negative to positive. At the same time experimentally determined optical properties of Fe45.6Mn25.9Ga28.9 Heusler alloy in austenitic and martensitic states look visually rather similar being noticeable different in microscopic nature as can be concluded from first-principle calculations. Experimentally observed changes in the physical properties of the alloy are discussed in terms of the electronic structures of an austenite and martensite phases.

引用

页码：85 / 90

页数：6

共 29 条

[21]

Perdew JP, 1996, PHYS REV LETT, V77, P3865, DOI 10.1103/PhysRevLett.77.3865

[22]

Sadovsky V. D., 1964, PHYS METALS METALOGR, V18, P502

[23]

SASOVSKAYA II, 1979, ZH EKSP TEOR FIZ+, V77, P2341

[24] Site preference and tetragonal distortion of Heusler alloy Mn-Ni-V [J].

Tan, J. G. ;

Liu, Z. H. ;

Zhang, Y. J. ;

Li, G. T. ;

Zhang, H. G. ;

Liu, G. D. ;

Ma, X. Q. .

RESULTS IN PHYSICS, 2019, 12 :1182-1189

[25] Magnetic-field-induced strain in Ni2MnGa shape-memory alloy [J].

Ullakko, K ;

Huang, JK ;

Kanter, C ;

Kokorin, VV ;

OHandley, RC .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5416-5416

[26] Structural and magnetic phase transitions in shape-memory alloys Ni2+xMn1-xGa [J].

Vasil'ev, AN ;

Bozhko, AD ;

Khovailo, VV ;

Dikshtein, IE ;

Shavrov, VG ;

Buchelnikov, VD ;

Matsumoto, M ;

Suzuki, S ;

Takagi, T ;

Tani, J .

PHYSICAL REVIEW B, 1999, 59 (02) :1113-1120

[27] Structure dependence of optical spectra of ferromagnetic Heusler alloy Ni-Mn-Ga [J].

Wan, JF ;

Wang, JN .

PHYSICA B-CONDENSED MATTER, 2005, 355 (1-4) :172-175

[28] FULL-POTENTIAL SELF-CONSISTENT LINEARIZED-AUGMENTED-PLANE-WAVE METHOD FOR CALCULATING THE ELECTRONIC-STRUCTURE OF MOLECULES AND SURFACES - O2 MOLECULE [J].

WIMMER, E ;

KRAKAUER, H ;

WEINERT, M ;

FREEMAN, AJ .

PHYSICAL REVIEW B, 1981, 24 (02) :864-875

[29] Magnetic-field-induced transformation in FeMnGa alloys [J].

Zhu, W. ;

Liu, E. K. ;

Feng, L. ;

Tang, X. D. ;

Chen, J. L. ;

Wu, G. H. ;

Liu, H. Y. ;

Meng, F. B. ;

Luo, H. Z. .

APPLIED PHYSICS LETTERS, 2009, 95 (22)

← 1 2 3 →