Magnets, motors and field systems under development.

Magnet families, motors and field systems developed at ISIT. Shapes, alignment and polarity are set to the duty — research covers miniature magnets for smart devices, NdFeB segments for wind-turbine generators, and motor magnets for automotive fans.

Neodymium disc magnets — NdFeB disc magnets

Rare-earth magnets

Conversion path: ore → La / Sm / Nd–Pr metal → finished magnet. NdFeB and SmCo in discs, rods, bricks, rings and custom polarity. Energy product up to 40 MGOe with controlled alignment.

40 MGOeDeveloped energy product

120 °CNdFeB working

500 °CSmCo working

NdFeB is the high-energy, compact grade (50 MGOe class, 120 °C working, Tc 320 °C). SmCo is the high-temperature rare-earth grade (27 MGOe, 500 °C working, Tc 750 °C).

Alnico, FeCrCo and ferrites

Alnico and Alnico-X families to 5 MGOe, 550 °C working temperature, Tc 860 °C. FeCrCo at 5 MGOe / 500 °C / Tc 800 °C. Hard ferrites for cost-sensitive motors. Soft ferrite cores: MnZn 1–1000 kHz and NiZn 1–1000 MHz — the classical domain of high-frequency magnetics.

5 MGOeAlnico & FeCrCo

550 °CAlnico working

1 kHz–1 GHzSoft ferrite range

Magnet family data sheet

Typical values for each family. Relative cost is indicative.

Material	(BH)max	Working	Curie Tc	Relative cost
NdFeB	50 MGOe	120 °C	320 °C	●●●○ ×10
SmCo	27 MGOe	500 °C	750 °C	●●●● ×20
Alnico	5 MGOe	550 °C	860 °C	●●○○ ×5
FeCrCo	5 MGOe	500 °C	800 °C	●●○○ ×4

At a glance

Visual comparison of the four families.

Energy product (BH)max

Higher means more field from less magnet.

NdFeB50 MGOe

SmCo27 MGOe

Alnico5 MGOe

FeCrCo5 MGOe

Working temperature

Practical service limit for each family.

NdFeB120 °C

SmCo500 °C

Alnico550 °C

FeCrCo500 °C

Application studies

Development geometries for devices, energy and vehicles.

Smart devices

Super-small magnets for compact consumer and instrument assemblies.

Wind generators

NdFeB magnet segments for wind-turbine generators.

Automotive fans

Motor magnets for automotive fan drives.

BLDC motors

Developed at 0.8 kW, 3.0 kW and 5.0 kW using in-house magnet capability.

Electro-permanent magnets

Lift 2–50 kg: robotic actuators and grippers, magnetic milling tables, sorting lines, packing lines, lift-and-release.

Field therapy units

0–100 Hz and 0–100 Gauss per ICNIRP guidelines. Earth field referenced as 0.5 Gauss. Helmholtz / solenoid 0.05–200 Oe.

Planning a project?

Share your requirement — geometry, grade, temperature and duty cycle.

Tel +92 51 4866120 · Fax +92 51 4866121 · ibnsina0007@gmail.com

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