Key Laboratory For Electronic Materials And Devices

14/11/2025 - 04:35 PM
CÁC THÀNH TỰU CHÍNH

Functions:

  • Basic research, technology development in the field of electronic materials and devices.
  • Analysis, testing and evaluation of the quality of electronic materials and devices.
  • Training of highly qualified scientific and technological human resources.
  • Expanding domestic and international cooperation.

Tasks:

  • Conducting basic research, technology development and application deployment of electronic materials and devices.
  • Providing analysis, measurement, testing and technical consulting services for organizations and enterprises in the field of electronics and high technology.
  • Supporting the training of high-quality human resources through participation in research topics, projects and cooperation programs with universities and research institutes.
  • Participating in international scientific and technological cooperation to update new trends and improve research capacity.

Main research directions:

  • Electronic materials with special properties (high coercivity, high permeability, high electromagnetic wave absorption, magnetocaloric/thermoelectric/shape memory effects, ferroelectric-ferromagnetic multiphase...).
  • Devices for energy conversion and control devices (wind/thermoelectric generators, electric vehicles, magnetic/thermoelectric refrigerators, electromagnetic controllers, magnetic shields, electromagnetic sensors, micro-electromechanical devices...).

Director's contact information

GS.TS. NCVCC. Nguyen Huy Dan

Room: 204, Building: B2

Mobile phone number: 0912772339

Email: dannh@ims.(*)  -  Note: Replace (*) = vast.ac.vn

 
 

LIST OF MEMBERS

No.

Names

Position

Official Staff/ Contract Staff/ Collaborator

Office address

Email

Note: Replace (*) = vast.ac.vn

1

GS.TS. Nguyen Huy Dan

Director

Official Staff

Room: 204, Building: B2

dannh@ims.vast.ac.vn

2

TS. Pham Thi Thanh

 

Official Staff

Room: 205, Building: B2

thanhpt@ims.vast.ac.vn

3

TS. Nguyen Hai Yen

 

Official Staff

Room: 205, Building: B2

yennh@ims.vast.ac.vn

4

ThS. Pham Van Dai

 

Official Staff

Room: 306, Building: B2

daipv@ims.vast.ac.vn

5

ThS. Nguyen Huy Ngoc

 

Official Staff

Room: 205, Building: B2

ngocnh@ims.vast.ac.vn

6

ThS. Kieu Xuan Hau

 

Contract Staff

Room: 205, Building: B2

haukx@ims.vast.ac.vn

 
 

MAIN ACHIEVEMENTS

1. Research on the fabrication of rare-earth magnets with high coercivity for applications in motors and generators

A technological process for fabricating (Nd, Dy)-Fe-B sintering magnets at a semi-industrial scale has been developed, achieving high coercivity and maximum energy product, with Hc > 25 kOe and (BH)max > 30 MGOe by using powder metallurgy method. These magnets meet the requirements for application in motors and generators (Figure 1). This research contributes to self-reliance in the domestic production technology of high-quality rare-earth magnets to replace imported products, thereby promoting energy saving and environmental protection through the use of wind power and electric transportation.

Figure 1. Images of (Nd, Dy)-Fe-B sintering magnets (a), magnetic characteristics (b) and magnets used in wind generators and electric vehicles (c).

2. Research on the fabrication of rare-earth-free hard magnetic materials for security and defense

By changing the composition and technological conditions, the research team has fabricated (Al-Ni-Co-Fe-Cu-Ti...) Alnico magnets with a coercivity higher than 1 kOe and a maximum energy product of over 9 MGOe. We have mastered the technology to produce materials with the desired magnetic properties, meeting the requirements for manufacturing certain hard magnetic components for defense applications. Other (Mn-Bi, Mn-Ga, Co-Zr…) rare-earth-free hard magnetic materials  have also been investigated and fabricated to meet practical application demands. In addition, we have successfully fabricated Mn-(Bi,Ga)/(Fe-Co) nanocomposite materials with a maximum energy product (BH)max of about 5 MGOe.

3. Research on manufacturing shape memory alloys for application in micro-electromechanical control

Shape memory alloys are materials that can restore their original shape when subjected to temperature or magnetic field. With this interesting property, shape memory alloys have the potential for many applications in fields such as biomedicine, aerospace, automation, etc. We have researched and fabricated shape memory alloys based on (Ni-Ti, Ni-Ti-Cu...) Nitinol and (Ni-Mn-Ga, Ni-Co-Mn-Al...) Heusler that can be applied in practice.

The structure and magnetic properties of the Ni-Co-Mn-Al Heusler alloys were investigated with different concentrations of Co and Al. The Martensite-Austenite structural transformation related to the shape memory effect only occurs at appropriate concentrations of Co and Al (Figure 2a). The shape memory effect can be controlled by the concentration of Co and Al in this alloys.

Nitinol-based memory alloys have been studied for its microstructure, tensile strength, elastic modulus, strain, hardness and corrosion resistance. The alloys with good mechanical properties, high deformation, and structural phase transition temperature of about 60oC have been used to manufacture micro tweezers (Figure 2b). These micro tweezers can be used to classify, arrange particles and fibers with a size of several tens of micrometers.

Figure 2. Martensite-Austenite structural transformation on  thermomagnetization curves of Ni50-xCoxMn32Al18 shape memory alloy (a) and micro-tweezers (b).

4. Research on manufacturing magnetic materials for application in magnetic refrigeration technology

(Ni-Mn-Sn, Ni-Co-Mn-Sn…) Heusler magnetocaloric alloys and (Fe-Cr-Zr-B, La-Fe-Si…) rapidly quenched alloys exhibiting large magnetocaloric effects around room temperature have been successfully fabricated. The types of phase transitions, magnetic ordering, and critical parameters of these materials have been investigated. We have also tested the fabrication of a magnetic refrigeration device with a temperature change range of 7 K

 

LIST OF FEATURED PUBLICATIONS

  1. Nguyen Hai Yen, Nguyen Huy Ngoc, Kieu Xuan Hau, Truong Viet Anh, Pham Thi Thanh, and Nguyen Huy Dan, Development of a material composition for effective room temperature magnetocaloric effect based on Fe‑B‑Zr precursor amorphous alloy, Journal of Materials Science: Materials in Electronics, 36 (2025) 475.
  2. Nguyen Huy Dan, Kieu Xuan Hau, Nguyen Hai Yen, Pham Thi Thanh, Nguyen Huy Ngoc, Truong Viet Anh, Highly oriented crystallization, and tunable structural transformation and magnetic transition in Ni-Co-Mn-Al shape memory alloys, Journal of Magnetism and Magnetic Materials, 589 (2024) 171576.
  3. Nguyen Mau Lam, Pham Thi Thanh, Nguyen Huy Ngoc, Truong Viet Anh, Kieu Xuan Hau, Nguyen Hai Yen, Do Khanh Tung, Jung-Goo Lee, Hee-Ryoung Cha, Nguyen Trung Hieu, Nguyen Huy Dan, Inflence of Sn addition on the phase formation, microstructure and magnetic properties of Mn-Bi alloy ribbons, Journal of Magnetism and Magnetic Materials 603 (2024) 172235.
  4. Nguyễn Huy Dân, Nguyễn Văn Thao, Phạm Thị Thanh, Nguyễn Hải Yến, Nguyễn Huy Ngọc, Kiều Xuân Hậu, Quy trình chế tạo vật liệu từ cứng Alnico dị hướng bằng pháp đúc, Bằng độc quyền sáng chế số 38042, cấp theo Quyết định số 105229/QĐ-SHTT ngày 24/11/2023.
  5. Nguyễn Huy Dân, Phạm Thị Thanh, Nguyễn Hải Yến, Nguyễn Huy Ngọc, Kiều Xuân Hậu, Trần Đăng Thành, Vật liệu từ cứng chứa đất hiếm có lực kháng từ cao và phương pháp chế tạo vật liệu này, Bằng độc quyền sáng chế số 34971, cấp theo Quyết định số 925w/QĐ-SHTT ngày 14/2/2023.
  6. Pham Thi Thanh, Nguyen Huy Ngoc, Nguyen Mau Lam, Kieu Xuan Hau, Nguyen Hai Yen, Truong Viet Anh, Nguyen Huy Dan, Structure and magnetic properties of melt-spun Mn-Ga-Cu-Al ribbons, Materials Research Express, 10 (2023) 086101.
  7. Nguyen Hai Yen, Kieu Xuan Hau, Nguyen Huy Ngoc, Pham Thi Thanh, Truong Viet Anh and Nguyen Huy Dan, Influence of Co on Structure and Magnetic Properties of Ni50-xCoxMn29Ga21 Shape Memory Alloy Ribbons, Materials Transactions, 64 (2023) 2560-2567.
  8. Kieu Xuan Hau, Nguyen Hai Yen, Nguyen Huy Ngoc, Truong Viet Anh, Pham Thi Thanh, Nguyen Van Toan and Nguyen Huy Dan, Influence of Cu Concentration on Structure, Mechanical Properties and Corrosion Resistance of Ti­Ni­Cu Shape Memory Alloy Ribbons, Materials Transactions, 64 (2023) 849- 854.
  9. Nguyen Huy Dan, Kieu Xuan Hau, Nguyen Hai Yen, Pham Thi Thanh, Nguyen Huy Ngoc, Truong Viet Anh, Nguyen Thi Nguyet Nga, Do Thi Kim Anh, Structure and magnetic properties of Ni50-xCoxMn50-yAly (x = 5-9, y = 18-19) shape memory alloy ribbons, Journal of Alloys and Compounds, 916 (2022) 165470.
  10. Nguyen Hai Yen, Nguyen Trung Hieu, Nguyen Hoang Ha, Nguyen Mau Lam, Pham Thi Thanh & Nguyen Huy Dan, Large magnetocaloric effect and critical parameters around room temperature in the Fe79Cr6B2Nd3Zr10 alloy ribbon, Journal of Materials Science: Materials in Electronics, 32 (2021) 18862-18872.
 

MAIN EQUIPMENTS

No.

Device Name

Features, capabilities

Installation location

Person in charge of operations

1

M8500 Magnetizer Origin: China

The M8500 magnetizer is used to magnetize magnetic materials, providing a maximum magnetic field of up to 90 kOe

Room 103, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

ThS. Kieu Xuan Hau

2

ZGK-1 rapid quenching melt-spinning system

Origin: China

The ZGK-1 rapidly quenched melt-spinning system is used for alloy melting and the fabrication of rapidly quenched ribbons in a protective gas atmosphere

Room 104-105, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Nguyen Hai Yen

3

ZG-0.01J middle frequency furnace Origin: China

The ZG-0.01J middle frequency furnace ZG-0.01J is a type of frequency furnace operating at an intermediate frequency of 4 kHz. It is used for melting alloys in a protective gas atmosphere

Room 104-105, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Pham Thi Thanh

4

PEX-100 × 125 jaw crusher

Origin: China

The PEX-100 × 125 jaw crusher is a device used in the production line for sintered Nd-Fe-B magnets, responsible for the initial stage of the grinding process (coarse crushing).This machine uses mechanical jaws to break the alloy into smaller pieces in a protective gas atmosphere

Room 104-105, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

ThS. Nguyen Huy Ngoc

5

DSB ф500 × 650 coarse crusher

Origin: China

The DSB ф500 × 650 coarse crusher is a piece of equipment in the production line of sintered Nd-Fe-B magnets, responsible for the coarse grinding stage following jaw crushing. The machine employs a screw shaft to grind the alloy into powder under a protective inert gas atmosphere

Room 106-107, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

ThS. Nguyen Huy Ngoc

6

LHL-1 Jet-Mill

Origin: China

The LHL-1 Jet-Mill is a piece of equipment in the production line of Nd-Fe-B sintered magnets, responsible for the fine grinding stage. It uses the output material from the DSB ф500 × 650 coarse crusher. Its grinding principle is based on high-pressure compressed gas, which accelerates alloy particles, causing them to collide and break into ultrafine powder

Room 106-107, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

ThS. Nguyen Huy Ngoc

7

ZCY25-200 automatic press with magnetic field

Origin: China

The ZCY25-200 automatic press with magnetic field is a piece of equipment in the production line of Nd-Fe-B sintered magnets. It is used to compact and orient Nd-Fe-B magnetic powders under a magnetic field to form green compacts for the subsequent sintering process

Room 108-109, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Pham Thi Thanh

8

DYJ-120 isostatic press

Origin: China

The DYJ-120 isostatic press is a machine in the production line of sintered Nd-Fe-B magnets. It is used to increase the density of magnet compacts after the preliminary orientation pressing stage

Room 108-109, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Pham Thi Thanh

9

RVS-15G vacuum sintering furnace Origin: China

The RVS-15G vacuum sintering furnace is a piece of equipment in the production line of sintered Nd-Fe-B magnets, used for sintering magnets under a high-vacuum environment

Room 108-109, Building B2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Pham Thi Thanh

10

GSL1600-80X high-temperature vacuum furnace system

Origin: China

The GSL1600-80X is a vertical tube furnace system equipped with MoSi heating elements. It is widely used in materials science and chemistry laboratories for synthesizing new materials under vacuum or various gas atmospheres. The furnace temperature is controlled by a programmable controller with an accuracy of ±1 °C, supporting up to 51 programmable segments, and can reach temperatures up to 1600°C (2912°F)

Room 306, Building A2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

ThS. Nguyễn Huy Ngọc

11

Ultra high resolution scanning electron microscopy S-4800  

Origin: Japan

The S-4800 Hitachi is a scanning electron microscope (SEM) equipped with a cold field emission electron gun (FESEM) and an advanced electromagnetic lens system, providing high-resolution imaging. It is commonly used to characterize the properties of nanostructured materials

Room 202, Building A2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

ThS. Ta Ngoc Bach

12

X-ray diffractometer D5000

Origin: Thermo Fisher Scientific

The Equinox 5000 is an X-ray diffractometer used to characterize materials, providing qualitative and quantitative phase analysis, degree of crystallinity, structural system identification, and determination of lattice parameters of the studied samples

Room 211, Building A2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

PGS.TS. Tran Dang Thanh

13

Univex 450 sputtering systemOrigin: Germany

The UNIVEX 400 sputtering system from Leybold is an important instrument in thin-film fabrication based on physical deposition methods, equipped with both DC and RF power sources. It can be applied to the fabrication of single-layer as well as multilayer films for a wide range of materials. The deposited films exhibit low surface roughness, a composition close to that of the sputtering target, and high thickness accuracy

Room 308-309, Building A2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Nguyen Tien Thanh

14

OAI SERIES 800 Photolithography SystemOrigin: USA

The system is designed to align the optical axis of the substrate with the mask and then expose the material coated on the substrate using a UV light source for a preset exposure time. The system consists of a control unit, an optical alignment module, and an exposure unit. The optical microscope is used for optical axis alignment, while the light source is automatically positioned at the exposure site, with the exposure time fully programmable

Room 308-309, Building A2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Nguyen Tien Thanh

15

Spin coating systemOrigin: China

The spin-coating system is used for the fabrication of thin films. It allows control of spin speed, spin duration, and environmental conditions, thereby enabling precise adjustment of the thickness and properties of the deposited films

Room 308-309, Building A2, 18 Hoang Quoc Viet, Cau Giay, Hanoi

TS. Nguyen Tien Thanh

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