DataVXAIP AdvancesPaper
journal article·2026-03-01Open access

Magnetic properties of the quaternary Heusler alloy CoFeTiSn

Iduru Shigeta, Keiichiro Kuma, Hideki Aoshima, Touru Yamauchi, Rie Y. Umetsu, Takeshi Kanomata, Masahiko Hiroi

AIP Advances· Volume 16· Issue 3
Publisher pageOpen full text
Source abstract

Abstract

Structural and magnetic properties of the quaternary Heusler alloy CoFeTiSn were investigated. The crystal structure was found to be a cubic LiMgPdSn-type with a lattice parameter a = 0.605 77(9) nm at 300 K. The magnetization curve of CoFeTiSn exhibited the ferromagnetic behavior with a spontaneous magnetization Ms = 1.06 μB/f.u. and a Curie temperature TC = 173.6 K. The obtained Ms value is close to the value predicted by the Slater-Pauling rule and first-principles band calculations for half-metallic ferromagnets. The determination of spectral parameters T0 and TA based on Takahashi’s spin fluctuation theory suggests that spin fluctuations were suppressed relative to those in typical itinerant ferromagnets. The square of the spontaneous magnetic moment ps2(T) was proportional to T4/3 in wide temperature range up to TC. The experimental results reveal that the spin fluctuation theory for weak itinerant electron ferromagnets is applicable even to CoFeTiSn with moderately localized Co and Fe atoms.
Source: crossref · Quality: baseline

Research context

Metals & alloys

OpenAlex topics: Heusler alloys: electronic and magnetic properties · Magnetic properties of thin films · Chemical and Physical Properties of Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University 1 , Korimoto 1-21-35, Kagoshima 890-0065,

Institute for Solid State Physics, The University of Tokyo 2 , 5-1-5 Kashiwanoha, Kashiwa 277-8581,

Institute for Materials Research, Tohoku University 3 , 2-1-1 Katahira, Sendai 980-8577,

Center for Science and Innovation in Spintronics, Tohoku University 4 , 2-1-1 Katahira, Sendai 980-8577,

Research Institute for Engineering and Technology, Tohoku Gakuin University 5 , 3-1 Shimizukoji, Sendai 984-8588,

Funding

Japan Society for the Promotion of Science · Iwatani Naoji Foundation · Institute for Materials Research, Tohoku University · Institute for Solid State Physics, the University of Tokyo

References (24)

Show source-provided references
1. New class of materials: Half-metallic ferromagnets10.1103/physrevlett.50.2024 ↗
2. Extensive study of giant magnetoresistance properties in half-metallic Co2(Fe,Mn)Si-based devices10.1063/1.4772546 ↗
3. Realization of spin gapless semiconductors: The Heusler compound Mn2CoAl10.1103/physrevlett.110.100401 ↗
4. Half-metallicity and magnetism of quaternary Heusler compounds CoRuTiZ (Z=Si, Ge, and Sn)10.1016/j.jmmm.2016.10.020 ↗
5. Magnetization of quaternary Heusler alloy CoFeCrAl10.1109/tmag.2021.3096227 ↗
6. New quaternary half metallic material CoFeMnSi10.1063/1.3062812 ↗
7. Slater-Pauling behavior and origin of the half-metallicity of the full-Heusler alloys10.1103/physrevb.66.174429 ↗
8. Slater-Pauling behavior in LiMgPdSn-type multifunctional quaternary Heusler materials: Half-metallicity, spin-gapless and magnetic semiconductors10.1063/1.4805063 ↗
9. Magnetism, band gap and stability of half-metallic property for the quaternary Heusler alloys CoFeTiZ (Z=Si, Ge, Sn)10.1016/j.jallcom.2014.07.165 ↗
10. Half-metallic ferromagnets behavior of a new quaternary Heusler alloys CoFeCrZ (Z = P, As and Sb): Ab-initio study10.1016/j.jallcom.2017.10.178 ↗
11. Magnetic properties of highly spin-polarized Heusler alloy CoFeCrAl10.7566/JPSCP.38.011133 ↗
12. Magnetism and electronic structure of CoFeCrX (X=Si, Ge) Heusler alloys10.1063/1.4960350 ↗
13. Spin gapless semiconducting behavior in equiatomic quaternary CoFeMnSi Heusler alloy10.1103/physrevb.91.104408 ↗
14. Effect of atomic configuration on magnetic properties and electronic state of CoVMnAl quaternary Heusler alloy10.1016/j.jallcom.2020.157389 ↗
15. Electronic, structural, and magnetic properties of the half-metallic ferromagnetic quaternary Heusler compounds CoFeMnZ (Z=Al, Ga, Si, Ge)10.1103/physrevb.84.224416 ↗
16. Influence of order on the magnetic and electronic properties of quaternary half-metallic Heusler CoFeTiSn alloy10.1016/j.jallcom.2020.155977 ↗
17. Structure, exchange stiffness, and magnetic anisotropy of Co2MnAlxSi1–x Heusler compounds10.1063/1.3265428 ↗
18. Enhanced spin polarization of Co2MnGe Heusler alloy by substitution of Ga for Ge10.1143/apex.3.023002 ↗
19. Pressure effect on the magnetic properties of the half-metallic Heusler alloy Co2TiSn10.1103/physrevb.97.104414 ↗
20. Epitaxial contact Andreev reflection spectroscopy of NbN/Co2FeSi layered devices10.1063/1.5007287 ↗
21. 2009
22. On the origin of the curie-Weiss law of the magnetic susceptibility in itinerant electron ferromagnetism10.1143/jpsj.55.3553 ↗
23. Magnetic properties of ferromagnetic Heusler alloy Co2NbGa10.1016/j.jmmm.2020.166604 ↗
24. Magnetic properties of Co2TiGa compound10.1016/s0925-8388(00)01417-1 ↗