Hard magnetic materials is ferrite materials which not easy demagnetization after the magnetization and will keep the magnetic characteristic for a long-term , also known as permanent magnetic material. The hard magnetic ferrite crystal structure are generally hexagonal stone-magnetic lead, is
typical of barium ferrite BaFe. This material has better performance, lower cost, not only can be
used as telecommunications devices such as audio, telephone and various instruments of the magnets,
but in the medical, biological and printing show that such areas have been applied. Hard magnetic
materials used to produce permanent magnets, the magnets of the speaker and the electronic circuit
memory components and etc.
This is a question I¡¯ll let you answer. There are hundreds and hundreds of uses which you will discover here at ''Magnet Man'' and in the links. Yes, some are used to hold the family¡¯s schedule and photos onto the refrigerator door, but that is just one use for magnets. Magnets were first put to use to help navigate since they would always point in a North / South direction, no matter what the weather was. Daniel Boone once said, ''I can¡¯t say I was ever lost, but I was bewildered once for three days.'' Perhaps if he had a compass, his bewilderment would have only lasted a few hours!
For the most part, magnets are used to hold, separate, control, convey and elevate products and to convert electrical energy into mechanical energy or convert mechanical energy into electrical energy.
Some more unusual uses for magnetics are:
refrigeration (see also Patent #4107935)
bending an electron beam or proton beam in a synchrotron
Here is a list of things I've found around the house and in the car that uses magnets or electromagnets to make them work:
Around the house:
Headphones
Stereo speakers
Computer speakers
Telephone receivers
Phone ringers
Microwave tubes
Doorbell ringer solenoid
Refrigerator magnets to hold things
Seal around the refrigerator door
Plug-in battery eliminators
Floppy disk recording and reading head
Audio tape recording and playback head
Video tape recording and playback head
Credit card magnetic strip
TV deflection coil
TV degaussing coil
Computer monitor deflection coil
Computer hard drive recording and reading head
Dishwasher water valve solenoid
Shower curtain weights / attach to tub
Power supply transformers
Motors for use in:
CD spinner and head positioner
DVD spinner and head positioner
Audio tape transport
VHS tape transport
VHS tape loader
Microwave stirring fans
Kitchen exhaust fans
Garbage disposal motor
Dishwasher
Pump
Timer
Refrigerator
Compressor
Ice maker dumper
Sump pump
Furnace
Blower
Exhaust
Garage door opener
Clothes washer
Pump and agitator
Timer
Clothes dryer
Timer
Drum turner
Bathroom exhaust fan
Electric toothbrush
Ceiling fan
Pager or cell phone vibrator
Clocks (not the wind-up type or LCD type)
Computer
Cooling fans
Floppy disk spinner
CD spinner
DVD spinner
Hard disk spinner
Can opener
Motor
Lid holder magnet
Things in the Car:
Starter motor
A/C clutch
Interior fan motor
Electric door locks
Windshield wiper motor
Electric window motor
Side-view mirror adjuster motor
CD player motor
Audio tape player motor
Audio tape recorder and playback heads
Engine speed sensors
Alternator
Starter relay
Windshield washer pump motor