The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler Alloys
Experimental studies into the forced magnetostriction, magnetization, and temperature dependence of permeability in Ni<sub>2</sub>MnIn and Ni<sub>2</sub>MnSn ferromagnetic Heusler alloys were performed according to the spin fluctuation theory of itinerant ferromagnetism propo...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-04-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/13/9/2017 |
| _version_ | 1797569656439963648 |
|---|---|
| author | Takuo Sakon Junya Yamazaki Takumi Komori Takeshi Kanomata Yasuo Narumi Masayuki Hagiwara Hiroyuki Nojiri Yoshiya Adachi |
| author_facet | Takuo Sakon Junya Yamazaki Takumi Komori Takeshi Kanomata Yasuo Narumi Masayuki Hagiwara Hiroyuki Nojiri Yoshiya Adachi |
| author_sort | Takuo Sakon |
| collection | DOAJ |
| description | Experimental studies into the forced magnetostriction, magnetization, and temperature dependence of permeability in Ni<sub>2</sub>MnIn and Ni<sub>2</sub>MnSn ferromagnetic Heusler alloys were performed according to the spin fluctuation theory of itinerant ferromagnetism proposed by Takahashi. We investigated the magnetic field (<i>H</i>) dependence of magnetization (<i>M</i>) at the Curie temperature <i>T</i><sub>C</sub>, and at <i>T</i> = 4.2 K, which concerns the ground state of the ferromagnetic state. The <i>M</i>-<i>H</i> result at <i>T</i><sub>C</sub> was analyzed by means of the <i>H</i> versus <i>M</i><sup>5</sup> dependence. At 4.2 K, it was investigated by means of an Arrott plot (<i>H</i>/<i>M</i> vs. <i>M</i><sup>2</sup>) according to Takahashi’s theory. As for Ni<sub>2</sub>MnIn and Ni<sub>2</sub>MnSn, the spin fluctuation parameters in <i>k</i>-space (momentum space, <i>T</i><sub>A</sub>) and that in energy space (frequency space, <i>T</i><sub>0</sub>) obtained at <i>T</i><sub>C</sub> and 4.2 K were almost the same. The average values obtained at <i>T</i><sub>C</sub> and 4.2 K were <i>T</i><sub>A</sub> = 342 K, <i>T</i><sub>0</sub> = 276 K for Ni<sub>2</sub>MnIn and <i>T</i><sub>A</sub> = 447 K, <i>T</i><sub>0</sub> = 279 K for Ni<sub>2</sub>MnSn, respectively. The forced magnetostriction at <i>T</i><sub>C</sub> was also investigated. The forced linear magnetostriction (Δ<i>L</i>/<i>L</i>) and the forced volume magnetostriction (Δ<i>V</i>/<i>V</i>) were proportional to <i>M</i><sup>4</sup>, which followed Takahashi’s theory. We compared the forced volume magnetostriction Δ<i>V</i>/<i>V</i> and mechanical parameter, bulk modulus <i>K</i>. Δ<i>V</i>/<i>V</i> is inversely proportional to <i>K</i>. We also discuss the spin polarization of Ni<sub>2</sub>MnIn and other magnetic Heusler alloys. The <i>p</i><sub>C</sub>/<i>p</i><sub>S</sub> of Ni<sub>2</sub>MnIn was 0.860. This is comparable with that of Co<sub>2</sub>MnGa, which is a famous half-metallic alloy. |
| first_indexed | 2024-03-10T20:14:39Z |
| format | Article |
| id | doaj.art-a073e5b384444b1183c6ddb62166724a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T20:14:39Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-a073e5b384444b1183c6ddb62166724a2023-11-19T22:42:27ZengMDPI AGMaterials1996-19442020-04-01139201710.3390/ma13092017The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler AlloysTakuo Sakon0Junya Yamazaki1Takumi Komori2Takeshi Kanomata3Yasuo Narumi4Masayuki Hagiwara5Hiroyuki Nojiri6Yoshiya Adachi7Department of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, Shiga, JapanDepartment of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, Shiga, JapanDepartment of Mechanical and Systems Engineering, Faculty of Science and Technology, Ryukoku University, Otsu 520-2194, Shiga, JapanResearch Institute for Engineering and Technology, Tohoku Gakuin University, Tagajo 985-8537, Miyagi, JapanCenter for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, JapanCenter for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, JapanInstitute for Materials Research, Tohoku University, Sendai 980-8577, Miyagi, JapanGraduate School of Science and Engineering, Yamagata University, Yonezawa 992-8510, Yamagata, JapanExperimental studies into the forced magnetostriction, magnetization, and temperature dependence of permeability in Ni<sub>2</sub>MnIn and Ni<sub>2</sub>MnSn ferromagnetic Heusler alloys were performed according to the spin fluctuation theory of itinerant ferromagnetism proposed by Takahashi. We investigated the magnetic field (<i>H</i>) dependence of magnetization (<i>M</i>) at the Curie temperature <i>T</i><sub>C</sub>, and at <i>T</i> = 4.2 K, which concerns the ground state of the ferromagnetic state. The <i>M</i>-<i>H</i> result at <i>T</i><sub>C</sub> was analyzed by means of the <i>H</i> versus <i>M</i><sup>5</sup> dependence. At 4.2 K, it was investigated by means of an Arrott plot (<i>H</i>/<i>M</i> vs. <i>M</i><sup>2</sup>) according to Takahashi’s theory. As for Ni<sub>2</sub>MnIn and Ni<sub>2</sub>MnSn, the spin fluctuation parameters in <i>k</i>-space (momentum space, <i>T</i><sub>A</sub>) and that in energy space (frequency space, <i>T</i><sub>0</sub>) obtained at <i>T</i><sub>C</sub> and 4.2 K were almost the same. The average values obtained at <i>T</i><sub>C</sub> and 4.2 K were <i>T</i><sub>A</sub> = 342 K, <i>T</i><sub>0</sub> = 276 K for Ni<sub>2</sub>MnIn and <i>T</i><sub>A</sub> = 447 K, <i>T</i><sub>0</sub> = 279 K for Ni<sub>2</sub>MnSn, respectively. The forced magnetostriction at <i>T</i><sub>C</sub> was also investigated. The forced linear magnetostriction (Δ<i>L</i>/<i>L</i>) and the forced volume magnetostriction (Δ<i>V</i>/<i>V</i>) were proportional to <i>M</i><sup>4</sup>, which followed Takahashi’s theory. We compared the forced volume magnetostriction Δ<i>V</i>/<i>V</i> and mechanical parameter, bulk modulus <i>K</i>. Δ<i>V</i>/<i>V</i> is inversely proportional to <i>K</i>. We also discuss the spin polarization of Ni<sub>2</sub>MnIn and other magnetic Heusler alloys. The <i>p</i><sub>C</sub>/<i>p</i><sub>S</sub> of Ni<sub>2</sub>MnIn was 0.860. This is comparable with that of Co<sub>2</sub>MnGa, which is a famous half-metallic alloy.https://www.mdpi.com/1996-1944/13/9/2017ferromagnetic Heusler alloymagnetostrictionmagnetizationitinerant ferromagnetismspin polarization |
| spellingShingle | Takuo Sakon Junya Yamazaki Takumi Komori Takeshi Kanomata Yasuo Narumi Masayuki Hagiwara Hiroyuki Nojiri Yoshiya Adachi The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler Alloys Materials ferromagnetic Heusler alloy magnetostriction magnetization itinerant ferromagnetism spin polarization |
| title | The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler Alloys |
| title_full | The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler Alloys |
| title_fullStr | The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler Alloys |
| title_full_unstemmed | The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler Alloys |
| title_short | The Forced Magnetostrictions and Magnetic Properties of Ni<sub>2</sub>MnX (X = In, Sn) Ferromagnetic Heusler Alloys |
| title_sort | forced magnetostrictions and magnetic properties of ni sub 2 sub mnx x in sn ferromagnetic heusler alloys |
| topic | ferromagnetic Heusler alloy magnetostriction magnetization itinerant ferromagnetism spin polarization |
| url | https://www.mdpi.com/1996-1944/13/9/2017 |
| work_keys_str_mv | AT takuosakon theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT junyayamazaki theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT takumikomori theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT takeshikanomata theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT yasuonarumi theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT masayukihagiwara theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT hiroyukinojiri theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT yoshiyaadachi theforcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT takuosakon forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT junyayamazaki forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT takumikomori forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT takeshikanomata forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT yasuonarumi forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT masayukihagiwara forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT hiroyukinojiri forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys AT yoshiyaadachi forcedmagnetostrictionsandmagneticpropertiesofnisub2submnxxinsnferromagneticheusleralloys |