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Journal Articles

Hyperfine splitting and nuclear spin polarization in NdPd$$_5$$Al$$_2$$ and Nd$$_3$$Pd$$_{20}$$Ge$$_6$$

Metoki, Naoto; Shibata, Kaoru; Matsuura, Masato*; Kitazawa, Hideaki*; Suzuki, Hiroyuki*; Yamauchi, Hiroki; Hagihara, Masato; Frontzek, M. D.*; Matsuda, Masaaki*

Journal of the Physical Society of Japan, 91(5), p.054710_1 - 054710_6, 2022/05

https://doi.org/10.7566/JPSJ.91.054710
 Times Cited Count：0 Percentile：0(Physics, Multidisciplinary)

Hyperfine splitting of Nd nuclei in NdPd$$_5$$Al$$_2$$ has been studied by means of high-resolution neutron spectroscopy. We observed inelastic peaks at $$hbaromega =pm3;{mu}$$eV coming from the hyperfine splitting in the magnetically ordered phase due to the hyperfine interactions between Nd nuclei ($$I$$=7/2) and the 4$$f$$ electrons with $$Gamma_6$$ ground state composed of mainly $$|pm9/2rangle$$. At very low temperatures, nuclear spin of Nd is polarized with increasing occupation probability of low energy levels and contributes to the enhancement of the antiferromagnetic Bragg intensities: the elastic non-spin-flip channel is dominant. As an application of this phenomenon, we determined the Nd moment and hyperfine splitting from the temperature dependence of an antiferromagnetic Bragg intensities for Nd$$_3$$Pd$$_{20}$$Ge$$_6$$.

Journal Articles

High-temperature short-range order in Mn$$_3$$RhSi

Yamauchi, Hiroki; Sari, D. P.*; Watanabe, Isao*; Yasui, Yukio*; Chang, L.-J.*; Kondo, Keietsu; Ito, Takashi; Ishikado, Motoyuki*; Hagihara, Masato*; Frontzek, M. D.*; et al.

Communications Materials (Internet), 1, p.43_1 - 43_6, 2020/07

https://doi.org/10.1038/s43246-020-0042-1

High-temperature short-range order is discovered up to 720 K in Mn$$_3$$RhSi by complementary use of neutron scattering and muon spin relaxation measurements.

Journal Articles

Multi-step magnetic transitions in EuNiIn$$_4$$

Ikeda, Shugo*; Kaneko, Koji; Tanaka, Yuki*; Kawasaki, Takuro; Hanashima, Takayasu*; Munakata, Koji*; Nakao, Akiko*; Kiyanagi, Ryoji; Ohara, Takashi; Mochizuki, Kensei*; et al.

Journal of the Physical Society of Japan, 89(1), p.014707_1 - 014707_7, 2020/01

https://doi.org/10.7566/JPSJ.89.014707
 Times Cited Count：0 Percentile：0(Physics, Multidisciplinary)

Journal Articles

Unique helical magnetic order and field-induced phase in trillium lattice antiferromagnet EuPtSi

Kaneko, Koji; Frontzek, M. D.*; Matsuda, Masaaki*; Nakao, Akiko*; Munakata, Koji*; Ohara, Takashi; Kakihana, Masashi*; Haga, Yoshinori; Hedo, Masato*; Nakama, Takao*; et al.

Journal of the Physical Society of Japan, 88, p.013702_1 - 013702_5, 2019/01

https://doi.org/10.7566/JPSJ.88.013702
 Times Cited Count：56 Percentile：95.09(Physics, Multidisciplinary)

Journal Articles

Neutron powder diffraction study on the magnetic structure of NdPd$$_5$$Al$$_2$$

Metoki, Naoto; Yamauchi, Hiroki; Kitazawa, Hideaki*; Suzuki, Hiroyuki*; Hagihara, Masato*; Frontzek, M. D.*; Matsuda, Masaaki*; Fernandez-Baca, J. A.*

Journal of the Physical Society of Japan, 86(3), p.034710_1 - 034710_5, 2017/03

https://doi.org/10.7566/JPSJ.86.034710
 Times Cited Count：9 Percentile：57.96(Physics, Multidisciplinary)

Magnetic structure of NdPd$$_5$$Al$$_2$$ has been studied by means of neutron powder diffraction. We observed remarkable magnetic reflections with the modulation vector $$q$$= (1/2 0 0) below the ordering temperature $$T_{rm N}$$ = 1.2 K. We found a collinear magnetic structure of Nd moment of 2.9(1) $${mu}_{rm B}$$ at 0.3 K parallel to the $$c$$-axis, where the ferromagnetically ordered $$a$$ planes stack with four Nd layer period of ++-- sequence along the $$a$$ direction with the distance between adjuscent Nd layers to be $$a/2$$. This is very similar to CePd$$_5$$Al$$_2$$ with $$q$$ = (0.23 0.23 0) and the Ce moment parallel to the $$c$$-axis. These structures with in-plane modulation $$q_{|}$$ is a consequence of the two dimensional nature of fermi surface topology in this family, coming from unique crystal structure with very long tetragonal unit cell and large distance $$>$$ 7${AA}$ between the rare earth layers separated by Al and two Pd layers.

Oral presentation

Magnetic anisotropy in isovalent spin $$S$$=7/2 family Eu$$T$$In$$_4$$ ($$T$$=Ni, Pd, Pt)

Kaneko, Koji; Ikeda, Shugo*; Frontzek, M. D.*; Hanashima, Takayasu*; Nakao, Akiko*; Kiyanagi, Ryoji; Ohara, Takashi; Homma, Yoshiya*; Kobayashi, Hisao*; Yamagami, Hiroshi

no journal, , 

Oral presentation

Magnetic structure of NdPd$$_5$$Al$$_2$$

Metoki, Naoto; Yamauchi, Hiroki; Kitazawa, Hideaki*; Suzuki, Hiroyuki*; Hagihara, Masato*; Frontzek, M. D.*; Matsuda, Masaaki*; Fernandez-Baca, J. A.*

no journal, , 

Magnetic structure of NdPd$$_5$$Al$$_2$$ has been studied by means of neutron powder diffraction. We observed remarkable magnetic reflections with the modulation vector $$q$$ = (1/2 0 0) below the ordering temperature $$T_{rm N}$$ = 1.2 K. We found a collinear magnetic structure of Nd moment of 2.9(1) $${mu}_{rm B}$$ at 0.3 K parallel to the $$c$$-axis, where the ferromagnetically ordered $$a$$ planes stack with four Nd layer period of ++-- sequence along the $$a$$ direction with the distance between adjuscent Nd layers to be $$a/2$$. This is very similar to CePd$$_5$$Al$$_2$$ with $$q$$ = (0.23 0.23 0) and the Ce moment parallel to the $$c$$-axis. These structures with in-plane modulation $$q_{|}$$ is a consequence of the two dimensional nature of fermi surface topology in this family, coming from unique crystal structure with very long tetragonal unit cell and large distance $$>$$ 7${AA}$ between the rare earth layers separated by Al and two Pd layers.

Oral presentation

Magnetic structure of NdPd$$_5$$Al$$_2$$

Metoki, Naoto; Yamauchi, Hiroki; Kitazawa, Hideaki*; Suzuki, Hiroyuki*; Hagihara, Masato*; Frontzek, M. D.*; Matsuda, Masaaki*; Fernandez-Baca, J. A.*

no journal, , 

Magnetic structure of NdPd$$_5$$Al$$_2$$ has been studied by means of neutron powder diffraction. We observed remarkable magnetic reflections with the modulation vector $$q$$ = (1/2 0 0) below the ordering temperature $$T_{rm N}$$ = 1.2 K. We found a collinear magnetic structure of Nd moment of 2.9(1) $${mu}_{rm B}$$ at 0.3 K parallel to the $$c$$-axis, where the ferromagnetically ordered $$a$$ planes stack with four Nd layer period of ++-- sequence along the $$a$$ direction with the distance between adjacent Nd layers to be $$a/2$$. This is very similar to CePd$$_5$$Al$$_2$$ with $$q$$ = (0.23 0.23 0) and the Ce moment parallel to the $$c$$-axis. These structures with in-plane modulation $$q_{|}$$ is a consequence of the two dimensional nature of fermi surface topology in this family, coming from unique crystal structure with very long tetragonal unit cell and large distance $$>$$ 7${AA}$ between the rare earth layers separated by Al and two Pd layers.

Oral presentation

Diverse magnetic anisotropy in divalent Eu intermetallic family Eu$$T$$In$$_4$$

Kaneko, Koji; Ikeda, Shugo*; Frontzek, M. D.*; Cao, H.*; Hanashima, Takayasu*; Nakao, Akiko*; Kiyanagi, Ryoji; Ohara, Takashi; Kobayashi, Hisao*; Yamagami, Hiroshi

no journal, , 

no abstracts in English

Oral presentation

Magnetic order of cubic chiral antiferromagnet EuPtSi

Kaneko, Koji; Frontzek, M. D.*; Matsuda, Masaaki*; Nakao, Akiko*; Munakata, Koji*; Ohara, Takashi; Kakihana, Masashi*; Haga, Yoshinori; Hedo, Masato*; Nakama, Takao*; et al.

no journal, , 

no abstracts in English

Oral presentation

Neutron scattering study on chiral antiferromagnet EuPtSi

Kaneko, Koji; Frontzek, M. D.*; Matsuda, Masaaki*; Oishi, Kazuki*; Nakao, Akiko*; Munakata, Koji*; Ohara, Takashi; Kakihana, Masashi*; Haga, Yoshinori; Hedo, Masato*; et al.

no journal, , 

no abstracts in English

Oral presentation

Skyrmion lattice in 4$$f$$-electron magnet EuPtSi; Neutron scattering study

Kaneko, Koji; Frontzek, M. D.*; Matsuda, Masaaki*; Ito, Takashi; Oishi, Kazuki*; Nakao, Akiko*; Munakata, Koji*; Ohara, Takashi; Kakihana, Masashi*; Haga, Yoshinori; et al.

no journal, , 

Oral presentation

Probing the A phase of EuPtSi by neutron scattering

Kaneko, Koji; Tabata, Chihiro*; Oishi, Kazuki*; Ito, Takashi; Nakao, Hironori*; Frontzek, M. D.*; Matsuda, Masaaki*; Munakata, Koji*; Nakao, Akiko*; Ohara, Takashi; et al.

no journal, , 

no abstracts in English

Oral presentation

Neutron scattering study on A phase and its anisotropy in EuPtSi

Kaneko, Koji; Tabata, Chihiro*; Oishi, Kazuki*; Ito, Takashi; Nakao, Hironori*; Frontzek, M. D.*; Matsuda, Masaaki*; Munakata, Koji*; Nakao, Akiko*; Ohara, Takashi; et al.

no journal, , 

no abstracts in English

Oral presentation

Magnetic skyrmion lattice in cubic $$f$$-electron magnet EuPtSi

Kaneko, Koji; Tabata, Chihiro*; Takeuchi, Tetsuya*; Frontzek, M. D.*; Matsuda, Masaaki*; Oishi, Kazuki*; Ito, Takashi; Munakata, Koji*; Kiyanagi, Ryoji; Kakihana, Masashi*; et al.

no journal, , 

Oral presentation

Neutron scattering study on hyperfine splitting in NdPd$$_5$$Al$$_2$$ and Nd$$_3$$Pd$$_{20}$$Ge$$_6$$

Metoki, Naoto; Shibata, Kaoru; Matsuura, Masato*; Kitazawa, Hideaki*; Suzuki, Hiroyuki*; Yamauchi, Hiroki; Hagihara, Masato; Frontzek, M. D.*; Matsuda, Masaaki*

no journal, , 

Hyperfine splitting of Nd nuclei in NdPd$$_5$$Al$$_2$$ has been studied by means of high-resolution neutron spectroscopy. We observed inelastic peaks at $$hbaromega =pm3;{mu}$$eV coming from the hyperfine splitting in the magnetically ordered phase due to the hyperfine interactions between Nd nuclei ($$I$$=7/2) and the 4$$f$$ electrons with $$Gamma_6$$ ground state composed of mainly $$|pm9/2rangle$$. At very low temperatures, nuclear spin of Nd is polarized with increasing occupation probability of low energy levels and contributes to the enhancement of the antiferromagnetic Bragg intensities: the elastic non-spin-flip channel is dominant. As an application of this phenomenon, we determined the Nd moment and hyperfine splitting from the temperature dependence of an antiferromagnetic Bragg intensities for Nd$$_3$$Pd$$_{20}$$Ge$$_6$$.

Oral presentation

Magnetic skyrmion lattice in Eu-based trillium lattice compound EuPtX (X=Si, Ge)

Kaneko, Koji; Tabata, Chihiro*; Takeuchi, Tetsuya*; Frontzek, M. D.*; Matsuda, Masaaki*; Oishi, Kazuki*; Ito, Takashi; Munakata, Koji*; Kiyanagi, Ryoji; Kakihana, Masashi*; et al.

no journal, , 

Oral presentation

Magnetic skyrmion lattice in Eu-based trillium lattice compound EuPt$$X$$ ($$X$$ = Si, Ge)

Kaneko, Koji; Tabata, Chihiro; Frontzek, M. D.*; Matsuda, Masaaki*; Oishi, Kazuki*; Ito, Takashi; Munakata, Koji*; Kiyanagi, Ryoji; Kakihana, Masashi*; Hedo, Masato*; et al.

no journal, , 

no abstracts in English

18 (Records 1-18 displayed on this page)
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