Green Magnetic Materials Group

Group Members

Hossein Sepehri-Amin

Hossein SEPEHRI-AMIN

Group Leader

Dr. Hossein Sepehri-Amin has led the newly established Green Magnetic Materials Group at NIMS since April 1, 2023. He received his Ph.D. from the University of Tsukuba in 2011. His research focuses on high-performance magnetic materials, including permanent magnets, soft magnetic materials, and magnetocaloric compounds, with approaches spanning from multiscale microstructure characterization to data-driven materials design and simulations.

SP ID GS

NIMS Staff

T. Ohkubo

Tadakatsu OHKUBO

DXMag Director

Advanced electron microscopy and atom probe tomography for functional materials

SP ID GS
A. Saito

Akiko SAITO

Chief Researcher

Magnetic refrigeration and caloric materials with emphasis on thermal management design

SP ID GS
H. Mamiya

Hiroaki MAMIYA

Chief Researcher

Fundamental magnetism and neutron-based characterization of soft and hard magnetic materials

PP SP ID GS
N. Terada

Noriki TERADA

Chief Researcher

Neutron and x-ray diffraction studies of crystal and magnetic structures in frustrated magnets and magnetocaloric materials

PP SP ID GS
Xin Tang

Xin TANG

Senior Researcher

Synthesis and characterization of advanced permanent magnets and magnetocaloric materials

SP ID GS
A. Bolyachkin

Anton BOLYACHKIN

Researcher

Micromagnetic simulation and data-driven design of magnetic materials

SP ID GS
S. Okamoto

Satoshi OKAMOTO

Chief Invited Researcher

Magnetization processes in magnetic materials for power electronics

ID GS
R. Gopalan

Raghavan GOPALAN

Guest Researcher

Functional magnetic materials, Sm-Co permanent magnets

ID GS

Postdoctoral Researchers

N. Kulesh

Nikita KULESH

ICYS Research Fellow

Data-driven research on magnetic materials

SP ID GS
J. Zhang

Jiasheng ZHANG

Postdoctoral Research Fellow

New generation Sm-Fe permanent magnets

S. Larsen

Simon Rosenqvist LARSEN

Postdoctoral Research Fellow

Magnetocaloric materials and magnetic phase transitions

ID GS
A. Martin Cid

Andres MARTIN CID

Postdoctoral Research Fellow

Multifunctional alloys for thermomagnetic conversion applications

SP ID GS
L. Zhao

Lijuan ZHAO

Postdoctoral Research Fellow

Magnetocaloric materials and transport properties

SP ID GS
D.K. Khatua

Dipak Kumar KHATUA

Postdoctoral Research Fellow

Magnetocaloric materials for room temperature applications

ID GS
Z. Kautsar

Zulfa Hilmi KAUTSAR

Postdoctoral Research Fellow

Advanced permanent magnets with enhanced resistivity and coercivity

SP ID GS
A. Woltz

Aymeric WOLZ

Postdoctoral Research Fellow

Sm-Fe hard magnetic materials via HDDR

ID GS
JANG Yeryeong

JANG Yeryeong

Postdoctoral Research Fellow

Nd-Fe-B permanent magnets

GS

Graduate Students and Interns

T. Subagja

Toni SUBAGJA

PhD Student

Prospective rare earth lean permanent magnets

S. Madanie

Sam MADANIE

PhD Student

Sm-Co permanent magnets

K. Muhammad

Khalid MUHAMMAD

Master Student

Soft magnetic alloys

Y. Iida

Yuta IIDA

PhD Student

Sm-Fe-N permanent magnets

H. Kim

Hyuckjoong KIM

Internship Student

Nd-Fe-B permanent magnets

Administrative and Technical Staff

KK

Kae KOBAYASHI

Secretary

YH

Yuna HINATA

Secretary

HS

Hiroyuki SEBATA

Engineer

NK

Nozomi KURATA

Technical Staff

YI

Yoshiko INADA

Technical Staff

MM

Manami MAEDA

Technical Staff

ST

Sakura TERAKADO

Technical Staff

M.R. Kasem

Mohammad Riad KASEM

Technical Staff

T. Hirose

Tamaki HIROSE

Technical Staff

E. Boliachkina

Evgeniia BOLIACHKINA

Technical Staff

Y. Takano

Yuji TAKANO

Technical Staff

Alumni and Visitors

  • Ravi GAUTAM (Postdoc from 06.2022 to 04.2026)
  • Zexuan WANG (Postdoc from 01.2021 to 12.2025)
  • Babu MADAVALI (Postdoc from 06.2023 to 06.2025)
  • Vitaliy LOMAKIN (JSPS Fellowship on 12.2025; University of California San Diego, USA)
  • Konstantin SKOKOV (Visit from 07.2025 to 08.2025; TU Darmstadt, Germany)
  • Tetsuya NAKAMURA (Visiting Researcher from 05.2020 to 03.2025; NIMS-TOHOKU)
  • Allan MARCIEL DORING (Visiting Researcher from 03.2025 to 04.2025; JSPS-DFG; TU Darmstadt, Germany)
  • Ekaterina DENGINA (NIMS Jr. from 04.2023 to 03.2024 during MS)
  • Srinithi ASHOK KRISHNASWAMY (NIMS Jr. from 04.2022 to 09.2024 during PhD)
  • Dilipan ANGAYARKANNI RAMAMURTHY (NIMS Jr. from 04.2023 to 03.2025 during PhD)
  • Elisa GUISADO ARENAS (Internship from 09.2025 to 12.2025; University of Seville, Spain)
  • Andres Garcia FRANCO (Internship from 07.2025 to 10.2025; Basque Center for Materials, Spain)
  • Sam AHADI (Internship from 07.2025 to 09.2025; Imperial College London, UK)
  • Pavana Durga Sri Harsha MOLLETI (Internship from 07.2024 to 07.2025; IITH-NIMS Joint Research Center)
  • Mitali Madhusmita PRUSTY (Internship from 01.2024 to 03.2024; IIT Hyderabad, India)